USER MANUAL DIN Rail Mounting Temperature

TITLE: RFS – User Manual
USER MANUAL
170.IU0.RFS.001
RFS
DIN Rail Mounting
Temperature
Controller
ERO Electronic, division of Eurotherm s.r.l.
Via Enrico Mattei 21
I-28100 Novara ITALY
Tel. +39-0321-481111
Fax. +39-0321-481112
Page GB 2/51
TITLE: RFS – User Manual
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
170.IU0.RFS.00E
E-mail:hvssystem@hvssystem.com
Site web : www.hvssystem.com
Page GB 3/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
Index
MOUNTING REQUIREMENTS ..........................................................................................................4
OUTLINE DIMENSIONS ....................................................................................................................4
CONNECTION DIAGRAMS ...............................................................................................................4
ACCESSORIES.................................................................................................................................8
FUNCTIONALITY .............................................................................................................................11
SPECIAL FUNCTIONS DURING OPERATIVE MODE ...................................................................11
GENERAL NOTES ON THE MODBUS RTU PROTOCOL............................................................13
TRANSMISSION FORMAT ..............................................................................................................15
COMMUNICATION PROCEDURE..................................................................................................15
FUNCTION CODE 1 AND 2: BITS READING .................................................................................18
FUNCTION CODE 3 AND 4: WORDS READING ..........................................................................19
FUNCTION CODE 5: SINGLE BIT WRITING..................................................................................20
FUNCTION CODE 6: SINGLE WORD WRITING ...........................................................................21
FUNCTION CODE 8: DIAGNOSTIC................................................................................................22
FUNCTION CODE 15: MULTIPLE BITS WRITING .........................................................................23
FUNCTION CODE 16: MULTIPLE WORDS WRITING ..................................................................24
NOTES.............................................................................................................................................24
ERROR REPLY...............................................................................................................................27
DEVICE IDENTIFICATION GROUP (117).......................................................................................28
OPERATIVE GROUP (900).............................................................................................................29
DEVICE MANAGEMENT GROUP (1000)........................................................................................31
PROCESS VARIABLE INPUT GROUP (1100) ...............................................................................32
CURRENT TRANSFORMER INPUT AND ALARM GROUP (1200) ...............................................34
DIGITAL INPUT GROUP (1300) ......................................................................................................36
SETPOINT GROUP (1400) .............................................................................................................37
CONTROL (OUTPUT 1) GROUP (1500)........................................................................................40
SMART GROUP (1600)...................................................................................................................43
ALARM 1 (OUTPUT 2) GROUP (1700)...........................................................................................44
ALARM 2 (OUTPUT 3) GROUP (1800)...........................................................................................46
ALARM 3 (OUTPUT 4) GROUP (1900)...........................................................................................48
DIGITAL OUTPUTS GROUP (2000) ...............................................................................................50
COMMUNICATION GROUP (2100).................................................................................................51
GENERAL SPECIFICATIONS .........................................................................................................49
MAINTENANCE................................................................................................................................51
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TITLE: RFS – User Manual
170.IU0.RFS.00E
MOUNTING REQUIREMENTS
Fig. 1.B
OUTLINE DIMENSIONS
117
22.5
101
120
8.5
131
Select a mounting location having the following
characteristics:
1) it should be easy accessible
2) there is no vibrations or impact
3) there are no corrosive gases (sulphuric gas,
ammonia, etc.).
4) there are no water or other fluid (i.e. condense)
5) the ambient temperature is in accordance with
the operative temperature of the instrument
(from 0 to 50 °C).
6) the relative humidity is in accordance with the
instrument specifications ( 20% to 85 % non
condensing).
The instrument can be mounted on OMEGA DIN
rail in accordance with EN 50 022 (35 x 7.5 mm or
35 x 15 mm) regulations.
For outline dimensions refer to Fig. 2.
MOUNTING
17
18
19
14
15
16
Fig. 2
OUTLINE DIMENSIONS
1 2
3 4 5
J4
7
8
9
10
11
12
13
8.5
23
22
21
20
J2
CONNECTION DIAGRAMS
1 2 3 4 5
J4
Fig. 1.A
J2
17
18
19
14
15
16
7
8
9
10
11
12
13
REMOVING
7
8
9
10
11
12
13
14
15
16
23
22
21
20
J2
1 2 3 4 5
J4
23
22
21
20
Fig. 3 TERMINAL BLOCK
17
18
19
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TITLE: RFS – User Manual
170.IU0.RFS.00E
1) Don’t run input wires together with power
cables.
2) Pay attention to the line resistance; a high line
resistance (higher than 20 Ω/wire) may cause
measurement errors.
3) If shielded cable is used, it should be grounded
at one point only.
4) The resistance of the 3 wires must be the
same.
MEASURING INPUTS
NOTE: Any external component (like zener
barriers etc.) connected between sensor and input
terminals may cause errors in measurement due
to excessive and/or not balanced line resistance or
possible leakage currents.
LINEAR INPUT
20
+
mA
_
22
TC INPUT
Shield
+ 21
+
20
mA
_ 22
_
22
Shield
+ 21
Shield
_ 22
Fig. 6.A mA INPUT WIRING
Shield
21
+
mV
Fig. 4 THERMOCOUPLE INPUT WIRING
22
_
Shield
NOTE:
1) Don’t run input wires together with power
cables.
2) For TC wiring use proper compensating cable
preferable shielded.
3) When a shielded cable is used, it should be
connected at one point only.
21
+
mV
22
_
Shield
RTD INPUT
Fig. 6.B 60mV INPUT WIRING
RTD
23
Fig. 5
NOTE:
22 21
RTD
23 22 21
RTD INPUT WIRING
NOTE:
1) Don’t run input wires together with power
cables.
2) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
3) For mV input, pay attention to the line
resistance; a high line resistance may cause
measurement errors.
4) The input impedance is equal to:
< 5 Ω for 20 mA input.
> 1 MΩ for 60 mV input.
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TITLE: RFS – User Manual
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LOGIC INPUT
Safety note:
1) Do not run logic input wiring together with
power cables.
2) Use an external dry contact capable of
switching 5 mA, 7.5 V DC.
3) The instrument needs 100 ms to recognize a
contact status variation.
4) The logic inputs is isolated by the measuring
input.
RELAY OUTPUTS
OUT 1
18
C
NO
19
C
OUT 2
15
NO
16
NC
IN 1
11
6
OUT 3
12
7
C
NO
13
Fig. 7 - LOGIC INPUT WIRING
Fig. 9 RELAY OUTPUTS WIRING
This logic input can be programmed in order to
perform the following functions:
a) to switch from main set point to auxiliary set
point and viceversa.
logic input
op. set point
open
main SP
close
auxiliary SP (SP2)
b) to hold the set point ramp execution.
logic input
Ramp
open
RUN
close
HOLD
The contact rating of the OUT 1, 2 and 3 is
3A/250V AC on resistive load.
The number of operations is 3 x 105 at specified
rating.
NOTES
1) To avoid electrical shock, connect power line
at the end of the wiring procedure.
2) For power connections use No 16 AWG or
larger wires rated for at last 75 °C.
3) Use copper conductors only.
4) Don’t run input wires together with power
cables.
All relay contacts are protected by varistor against
inductive load with inductive component up to 0.5
A.
CURRENT TRANSFORMER INPUT
8
The following recommendations avoid serious
problems which may occur, when using relay
output for driving inductive loads.
9
Current
transformer
Load
Fig. 8
CURRENT TRANSFORMER INPUT
WIRING
Note:
1) The input impedance is equal to 12 Ω.
2) The maximum input current is equal to 50 mA
rms (50 / 60 Hz).
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TITLE: RFS – User Manual
170.IU0.RFS.00E
INDUCTIVE LOADS
High voltage transients may occur switching
inductive loads.
Through the internal contacts these transients
may introduce disturbances which can affect the
performance of the instrument.
For all the outputs, the internal protection (varistor)
assures a correct protection up to 0.5 A of
inductive component.
The same problem may occur when a switch is
used in series with the internal contacts as shown
in Fig. 10.
C
power
line
R
Maximum current = 20 mA.
NOTE: This output is not isolated. A double or
reinforced isolation between instrument output and
power supply must be assured by the external
solid state relay.
SERIAL INTERFACE
RS-485 interface allows you to connect slave
1
2
A/A’
B/B’
C/C’
Common
3
devices with one remote master unit.
load
Fig. 10 EXTERNAL SWITCH IN SERIES WITH
THE INTERNAL CONTACT
In this case it is recommended to install an
additional RC network across the external contact
as show in Fig. 10
The value of capacitor (C) and resistor (R) are
shown in the following table.
LOAD
(mA)
C
(µF)
R
(Ω)
P.
(W)
OPERATING
VOLTAGE
<40 mA 0.047 100
<150 mA 0.1
22
<0.5 A
0.33 47
1/2
2
2
260 V AC
260 V AC
260 V AC
The cable involved in relay output wiring must be
as far away as possible from input or
communication cables.
VOLTAGE OUTPUTS FOR SSR DRIVE
+
18
OUT 1
_
+
_
19
SOLID STATE
RELAY
+
15
OUT 2
_
+
_
16
SOLID STATE
RELAY
Fig. 11 SSR DRIVE OUTPUT WIRING
It is a time proportioning output.
Logic level 0: Vout < 0.5 V DC.
Logic level 1:
- 14 V + 20 % @ 20 mA
- 24 V + 20 % @ 1 mA.
Fig. 12 - RS-485 WIRING
NOTES:
1) The RFS is equipped with an RS-485 driver with
an input impedance fore time higher than a
standard one. For this reason it is possible to
connect 120 RFS units to the same master
(instead of 30).
1) The cable length must not exceed 1.5 km at
19200 BAUD.
2) This serial interface is isolated.
3) The following report describes the signal sense
of the voltage appearing across the
interconnection cable as defined by EIA for
RS-485.
a) The ” A ” terminal of the generator shall be
negative with respect to the ” B ” terminal for
a binary 1 (MARK or OFF) state.
b) The ” A ” terminal of the generator shall be
positive with respect to the ” B ” terminal
for a binary 0 (SPACE or ON).
4) The EIA standard establishes that by RS-485
interface it is possible to connect up to 30
devices with one remote master unit.
The serial interface of these instruments is
based on “High input impedance” transceivers;
this solution allows you to connect up to 120
devices (based on the same transceiver type)
with one remote master unit.
Page GB 8/51
TITLE: RFS – User Manual
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
170.IU0.RFS.00E
E-mail:hvssystem@hvssystem.com
Site web : www.hvssystem.com
Page GB 9/51
TITLE: RFS – User Manual
POWER LINE WIRING
5
POWER LINE 24 V A.C/DC
4
Fig. 13 POWER LINE WIRING
NOTES:
1) Before connecting the instrument to the power
line, make sure that line voltage corresponds to
the description on the identification label.
2) Use copper conductors only.
3) Don’t run input wires together with power
cables.
4) The power supply input is NOT fuse protected.
Please, provide it externally.
For one unit only, the fuse must be rated as
follows:
Power supply Type
Current
Voltage
24 V AC/DC
T
315mA
250 V
When fuse is damaged, it is advisable to verify
the power supply circuit, so that it is necessary
to send back the instrument to your supplier.
5) The maximum power consumption is equal to 6
VA (4 W) maximum.
170.IU0.RFS.00E
ACCESSORIES
BUS cable
It is possible to use a screw connector instead of
the flat cable, allowing the normal wiring of a single
controller.
This flat cable allows the simultaneous connection
of the power supply, the serial interface, the
common alarm output (out 4) and the common
logic input of up to 12 instruments plus one
Common I/O unit or up to 13 instruments.
NOTE:
1) the logic inputs of each instrument can be
driven:
by its own connector (terminals 6 and 7),
without affecting the working of the other
elements
by the common logic input (terminals 24 and
25) present on the common I/O unit. In this
case, all instruments connected with the BUS
cable will detect the same logic input
condition.
2) The local logic input (terminals 6 and 7), and
the common logic input (terminals 24 and 25),
are in OR condition.
BUS
cable
Fig. 14 – BUS CABLE
The connector used is a MOLEX Europe with
circuits Part number 39512163
16
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TITLE: RFS – User Manual
170.IU0.RFS.00E
Fig. 15 – CONNECTOR 8 x 2 FOR BUS CABLE
COMMON I/O UNIT
This unit can perform 3 different functions:
1) It is the relay output of all the common alarm
connected by the BUS cable.
2) It performs the connection of the common
logic input of all the units connected by the
BUS cable.
3) It is the natural connection of the power supply
and of the serial link for all the units connected
by the BUS cable.
1 2 3 4 5
24
25
J2
COMMON
I/O UNIT
D.IN
D.IN
D.IN
D.IN
6
6
6
6
24
7
7
7
7
25
Fig. 18/A Common logic input OPEN
RFS
D.IN
RFS
D.IN
RFS
D.IN
RFS
D.IN
6
6
6
6
24
7
7
7
7
25
RFS
RFS
RFS
RFS
COMMON
I/O UNIT
Fig. 18/B Common logic input CLOSE
26
27
28
Fig. 16 - COMMON I/O UNIT TERMINAL BLOCK
For serial interface and power supply connection
see fig. 12 and 13 and relative notes.
Common logic input
Safety note:
1) Do not run logic input wiring together with
power cables.
2) Use an external dry contact capable of
switching 100 mA, 7.5 V DC minimum.
3) The instrument needs 100 ms to recognize a
contact status variation.
4) The logic input is isolated by the measuring
input.
IN 1
24
25
Fig. 17 – COMMON LOGIC INPUT WIRING
NOTE: As shown in Fig 18, the logic input of a
group of RFS can be driven singularly (using
terminals 6 and 7 of the specific instrument) or
collectively (using terminals 24 and 25 of the
Common I/O unit).
This logic input can be programmed in order to
perform the following functions:
a) to switch from main set point to auxiliary set
point and viceversa.
logic input selected set point
open
main SP
close
auxiliary SP (SP2)
b) to hold, the set point ramp execution.
logic input
Ramp
open
RUN
close
HOLD
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TITLE: RFS – User Manual
170.IU0.RFS.00E
Common alarm output
Phoenix model MSTB 2.5/2-ST-5.08
NC
26
C
27
NO
28
Fig. 19 COMMON ALARM OUTPUT WIRING
OFF ON
V+
Out 4
From bus connector
RFS
RFS
RFS
RFS
Fig. 22 - 3 wires connector
26
N.C.
27
COM
28
N.O.
Phoenix model MSTB 2.5/3-ST-5.08
COMMON I/O UNIT
Fig. 20/A Relay de-energized, beacon ON lit.
OFF ON
V+
Out 4
From bus connector
RFS
RFS
RFS
RFS
26
N.C.
27
COM
28
N.O.
Fig. 23 - 4 wires connector
NOTE: this connector is a gold plated connector
and it is shipped with the instrument and it
is not included in the connector kit.
Phoenix model MSTB 2.5/4-ST-5.08
COMMON I/O UNIT
Fig. 20/B Relay energized, beacon OFF lit.
The contact rating of this output is 8A/250V AC on
resistive load.
The number of operations is 3 x 105 at specified
rating.
NOTE
Don’t run input wires together with power cables.
The relay contacts are protected by varistor
against inductive load with inductive component up
to 0.5 A.
Fig. 24 - 5 wires connector
Phoenix model MSTB 2.5/5-ST-5.08
CONNECTOR KIT
The unit can be supplied with or without the
connector kit.
The quantity of each connector is related with the
specific options selected.
Fig. 25 - 8 wires connector
Phoenix model MSTB 2.5/8-ST-5.08
Fig 21 – 2 wires connector
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TITLE: RFS – User Manual
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FUNCTIONALITY
Operating modes description
The device foresees three different operating
modes named:
- Calibration mode
- Configuration mode
- Operative mode
The calibration mode
This operating mode is detailed in a specific
manual named “RFS Calibration manual”.
The configuration mode
During configuration mode the instrument does not
perform the process control and the alarms
functions.
During configuration it is possible to read and write
all the parameters of the instrument.
The instrument configuration can be made by RS485 or by a specific tool named CPI.
NOTE the standard RS-485 and the CPI are
mutually exclusive and the CPI have the priority
with respect of the RS-485.
The CPI is shipped with a special software aimed
to made the configuration procedure very easy.
The CPI and the RFS configuration program are
described in a specific manual.
In the chapter “RFS Modbus protocol” you will find
all the information related with the various
parameters (when it can be write or read, limits,
and so on).
The operative mode
During operative mode the instrument performs the
process control and the alarms management and
all the other special functions (SMART, soft start,
etc.).
During Operative mode it is possible to read and
write a subset of parameters.
SPECIAL FUNCTIONS DURING
OPERATIVE MODE
Follows a list of the special functions perform by
this instrument. It aims to help you during
configuration and operative mode in order to obtain
the best performance from this instrument.
NOTE: in the following descriptions two square
brackets are used to define the Modbus address of
a parameter.
Indicators
1
Lit when OUT 1 is ON.
2
Lit when OUT 2 is ON.
3
Lit when OUT 3 is ON.
4
Lit when OUT 4 is ON.
PV FAIL Lit when a failure is detected on the
measuring input.
COM
Lit during transmission.
SYS
Flashing during operative mode
Lit during configuration and calibration
mode.
D.IN
lit when the logic input is closed
Enable/disable the control output
When the instrument is in operative mode, it is
possible to disable the control outputs [1504]. In
this open loop mode the device will function as an
indicator, the instrument will perform the measure
but all control outputs will be forced to 0.
When the control outputs are disabled the alarms
are also in no alarm condition.
If a power down occurs when the control output is
disabled, at instrument power up the control output
will be automatically disabled.
When the control is restored the instrument
operates as in presence of a power up and the alarm
mask function, if configured, will be activated.
MANUAL function
The MANUAL mode function [1503] allows to set
directly the power output of the instrument.
The transfer from AUTO to MANUAL and viceversa
is bumpless (this function is not provided if integral
action is excluded).
If transfer from AUTO to MANUAL is performed
during the first part of SMART algorithm (TUNE)
when returning in AUTO the device will be forced
automatically in the second part of the SMART
algorithm (ADAPTIVE).
At power up the device will be in the AUTO mode
or as it was left prior to power shut down
depending on [1521] configuration selection.
Note: When start up occurs in Manual mode the
power output (OUT1 - OUT2) is set to 0.
SMART function
It is used to automatically optimize the control
action.
When the SMART function is enabled, it is
possible to read but not to write the control
parameters (Pb, Ti, Td).
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TITLE: RFS – User Manual
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Disabling the SMART function, the instrument
maintains the actual set of control parameters and
it enables parameter modification.
NOTES: When ON/OFF control is programmed
(Pb=0), the SMART function is disabled.
Energy management at start up
Synchronous pre-heating
This function eliminates differential heating during
machine start up due to differing heating rates of
individual heaters.
This function operate as follows:
At instrument start up all controllers use the first
measured value as initial set point and than they
start a ramp from this set point to the final set
point previously programmed.
All common alarms are set as band alarms and
are connected with the common logic input.
In this way if the measure of one loop goes out of
the tracking band, the common alarm will close
the common logic input and the ramp execution of
all the loops will be hold.
The ramp execution will restart when all measures
come back in the tracking band.
In order to obtain this function, set the instruments
as follows:
1) The alarm 3 is a band alarm ([1903] = 2,
[1904] = 0, [1905] = 0, [1906] = 0 and
[1907] = 0)
2) The “operative set point at start up” must be
set equal to “aligned to the measured value”
([1410] = 1)
3) The logic input is used for ramp hold
([1301]
= 2)
4) The “rate of change for positive set point
variation” [1408] and the “rate of change for
negative set point variation” [1409] must be set
between 1 and 100 digit per minute according
with the desired rate of change.
5) The common alarm output is connected with
the common logic input.
Sequential address (Modbus) for frequently
accessed parameter.
To maximize the data transfer rates between the
RFS and the host supervisory system important
operating parameters are grouped with sequential
address (see operative group [900]).
To further increase data transfer efficiency, all
digital status information are transferred as one
data word.
The system enables the RFS to communicate
relevant parameter information with a single data
request, not a series of separate address
operations.
When you turn ON a multi-loops machine where
all loops have the soft start function, at power up
the ON and OFF period of the control output of all
loops will be (more or less) synchronous. This fact
produces high current peaks.
These instruments will use their Modbus address
(all addresses are different) in order to displace the
ON and OFF period of the control output(s).
This facility significantly reduces maximum
machine start-up current requirements and offers
potential savings in electrical installation capacity
and cable requirements.
Availability of the not used I/O by serial link
All RFS I/O may be read directly over the Modbus
communication interface by the host supervisory
system. Additionally, the communication host
may write to RFS outputs that are not assigned as
alarm or output functions.
This facility expands available PLC and host
supervisory system I/O, simplifies machine
troubleshooting and provides the possibility to
perform remote diagnostics.
OFD function – Output failure detection
(optional)
Using the CT input the output failure detection
function monitors the current in the load driven by
the output 1.
Load and actuator protection is provided in the
following way:
- During the ON period of the output, the
instrument measures the current through the
load and it generates an alarm condition if this
current is lower than a pre-programmed threshold
[1206]. A low current shows a partial or total
break down of the load or actuator SSR.
- During the OFF period of the output, the
instrument measures the leakage current through
the load and it generates an alarm condition
when this current is higher than a preprogrammed threshold value[1205]. A high
leakage current shows a short circuit of the
actuator.
Page GB 14/51
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“Soft start” function
This function allows to gradually warm up the
machine during start up in order to delete thermal
strength and to protect the raw material.
170.IU0.RFS.00E
The energy applied is restricted (by [1514]) for a
programmable time [1515].
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TITLE: RFS – User Manual
170.IU0.RFS.00E
GENERAL NOTES ON THE MODBUS RTU PROTOCOL
This half duplex protocol accepts one master and one or more slaves.
The physical interface should be of the RS-485 type.
A single multidrop link can take up to 120 devices having the same "High input impedance" as the transceiver
used.
The computer must be programmed to serve as a master controlling which slave has access to the link. All
other slaves are in waiting state. Each slave has a unique address ranging from 1 to 254.
Address "0" is a broadcast one. When the master sends a message with address "0", all slaves receive it
and no one replies.
NOTE: The numerical value present in this text are expressed as:
- binary value if they are followed by b
- decimal value if they are not followed by any letter
- hexadecimal value if they are followed by h
TRANSMISSION FORMAT
The protocol uses the RTU (Remote terminal unit) mode of transmission.
RTU is a binary method with byte format composed as follows:
1 start bit, 8 data bit, 1 parity bit (optional), 1 stop bit.
The communication speed is selectable among 600, 1200, 2400, 4800, 9600 and 19200 baud.
NOTE: If CPI (Configuration Port Interface) is used the transmission format is fixed
(19200 - 8 bits – No parity) and the address is fixed at 255
The broadcast address (0) is not admitted
COMMUNICATION PROCEDURE
The communication can be initiated only by the master unit; the slave units can transmit only after
a query has been received from the master.
The general format for the transmission from master to slave is the following:
RANGE
Slave address
Function code
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
BYTE
1
1
n
1
1
The slave detects the start of a query frame when the delay time between two characters is
greater than 3.5 T.U. (Time Unit = Time necessary to transmit one character).
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ERROR CHECK (CRC-16 Cyclical Redundancy Check)
The CRC-16 value is calculated by the transmitting device. This value is appended to the
message. The receiving device recalculates a CRC-16 and compares the calculated value to the
received value. The two values must be equal.
The CRC-16 is started by first pre-loading a 16-bit register to all 1's. Then a process begins of
applying successive the bytes of the message to the current contents of the register.
Only the eight bits of data in each character are used for generating the CRC-16. Start and stop
bits, and the parity bit if one is used, do not apply to the CRC-16.
During generation of the CRC-16, each byte is exclusive ORed with the register contents. Then
the result is shifted to the right , with a zero filled into the most significant bit (MSB) position. If the
LSB was a 1, the register is then exclusive ORed with a preset, fixed value. If the LSB was a 0, no
exclusive OR takes place.
This process is repeated until eight shifts have been performed. After the last shift, the next byte is
exclusive ORed with the register's current value, and the process repeats for eight more shifts as
described above. The final contents of the register, after all the characters of the message have
been applied, is the CRC-16 value.
A procedure for generating a CRC-16 is:
1) Load a 16-bit register (CRC-16 register) with FFFFh (all 1's).
2) Exclusive OR the first byte of the message with the low byte of the CRC-16
register. Put the result in the CRC-16 register.
3) Shift the CRC-16 register one bit to the right (toward the LSB), zero-filling the
MSB. Extract and examine the LSB.
4) (If the LSB was 0): Repeat Step 3 (another shift).
(If the LSB was 1): Exclusive OR the CRC-16 register with the polynomial
value A001h (1010 0000 0000 0001b).
5) Repeat Steps 3 and 4 until 8 shifts have been performed. When this is done,
a complete byte will have been processed.
6) Repeat Steps 2 through 5 for the next byte of the message.
Continue doing this until all bytes have been processed.
7) The final contents of the CRC-16 register is the CRC-16 value.
When the CRC-16 (16 bytes) is transmitted in the message, the low byte
will be transmitted first, followed by the high byte.
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TITLE: RFS – User Manual
170.IU0.RFS.00E
An example of a C language function performing CRC generation is shown below.
/* --------------------------------------------------------------crc_16
calculate the crc_16 error check field
Input parameters:
buffer: string to calculate CRC
length: bytes number of the string
This function returns the CRC value.
--------------------------------------------------------------- */
unsigned int crc_16 (unsigned char *buffer, unsigned int length)
{
unsigned int i, j, temp_bit, temp_int, crc;
crc = 0xFFFF;
for ( i = 0; i < length; i++ ) {
temp_int = (unsigned char) *buffer++;
crc ^= temp_int;
for ( j = 0; j < 8; j++ ) {
temp_bit = crc & 0x0001;
crc >>= 1;
if ( temp_bit != 0 )
crc ^= 0xA001;
}
}
return (crc);
}
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TITLE: RFS – User Manual
170.IU0.RFS.00E
Function code 1 and 2: Bits reading
These function codes are used by the master unit to request the value of a consecutive group of
bits (max 24) which are representing the status of the slave unit.
Request from master to slave
Range
Byte
Slave address (1-255)
1
Function code (01-02)
1
Bit starting address (high byte)
1
Bit starting address (low byte)
1
Number of bits (high byte)
1
Number of bits (low byte)
1
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (01-02)
1
Byte counter (n)
1
Data
n
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
The "Data" field indicates the bits requested: the bit with lower address is in the bit 0 of the first
byte, the next is in the bit 1, and so on.
The eventual don’t care bits necessary to complete the last byte are equal to 0.
Example:
Ask to slave at address 3 (3h) the status of 4 (4h) bits starting from bit 2000 (7D0h) “Digital
outputs group”.
Request from master to slave
Range
Byte
Slave address
03h
Function code
01h
Bit starting address (high byte)
07h
Bit starting address (low byte)
D0h
Number of bits (high byte)
00h
Number of bits (low byte)
04h
Error check (CRC-16) (low byte)
3Ch
Error check (CRC-16) (high byte)
A6h
Reply from slave to master
Range
Slave address
Function code
Byte counter
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
The byte in "Data" field (0Ah=000001010b) means:
Bit 2000 status
Bit 2001 status
Bit 2002 status
Bit 2003 status
Don’t care
Don’t care
Don’t care
Don’t care
=
=
=
=
=
=
=
=
0
1
0
1
0
0
0
0
Status of output 1, output not energized
Status of output 2, output energized
Status of output 3, output not energized
Status of output 4, output energized
Byte
03h
01h
01h
0Ah
D0h
37h
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170.IU0.RFS.00E
Function code 3 and 4: Words reading
These function codes are used by the master unit to read a consecutive group of words (16 bit)
which contain the value of the variable of the slave unit.
The master can require a maximum of 20 words at a time.
Request from master to slave
Range
Byte
Slave address (1-255)
1
Function code (03-04)
1
Word starting address (high byte)
1
Word starting address (low byte)
1
Number of word (high byte)
1
Number of word (low byte)
1
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (03-04)
1
Byte counter (n)
1
Data
n
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
The "Data" field contains the requested words in the following format: high byte of the first word,
low byte of the first word, high byte of the second word, and so on.
The "Data" field contains 8000h for not implemented addresses or for information not relevant in
the actual device configuration.
Example:
Ask to slave at address 1 (1h) the value of 3 (3h) words starting from word 1100 (44Ch) “Process
variable input group”.
Request from master to slave
Range
Byte
Slave address
01h
Function code
03h
Word starting address (high byte)
04h
Word starting address (low byte)
4Ch
Number of words (high byte)
00h
Number of words (low byte)
03h
Error check (CRC-16) (low byte)
C5h
Error check (CRC-16) (high byte)
2Ch
Reply from slave to master
Range
Slave address
Function code
Byte counter
Data
Data
Data
Data
Data
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
Byte
01h
03h
06h
00h
1Dh
00h
1Dh
00h
03h
1Dh
70h
The 6 bytes in "Data" field (00h, 1Dh, 00h, 1Dh, 00h, 03h) are 3 words whose meaning is:
Word 1100 value = 29 (1Dh)
Word 1101 value = 29 (1Dh)
Word 1102 value = 3 (3h)
Input variable without filter, 29 °C
Filtered input variable, 29 °C
Input type and range value for main input, Tc J –100 ÷ 1000°C
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170.IU0.RFS.00E
Function code 5: Single bit writing
By using this command, the master unit can change the state of one bit of the slave unit.
Command from master to slave
Range
Byte
Slave address (0*-255)
1
Function code (05)
1
Bit address (high byte)
1
Bit address (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (05)
1
Bit address (high byte)
1
Bit address (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
* To use the address 0, see note 1 (“Broadcast” address) in the “Notes” section.
"Data" field
=
0h to reset the bit
= FF00h to set the bit
Example:
Set bit 1003 (3EBh) of slave at address 35 (23h), “Manual reset of an alarm condition” in “Device
management group”.
Command from master to slave
Range
Byte
Slave address
23h
Function code
05h
Bit address (high byte)
03h
Bit address (low byte)
EBh
Data
FFh
Data
00h
Error check (CRC-16) (low byte)
FAh
Error check (CRC-16) (high byte)
C8h
Reply from slave to master
Range
Slave address
Function code
Bit address (high byte)
Bit address (low byte)
Data
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
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Byte
23h
05h
03h
EBh
FFh
00h
FAh
C8h
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170.IU0.RFS.00E
Function code 6: Single word writing
By using this command, the master unit can change the value of one word (16 bit) of the slave
unit.
Command from master to slave
Range
Byte
Slave address (0*-255)
1
Function code (06)
1
Word address (high byte)
1
Word address (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (06)
1
Word address (high byte)
1
Word address (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
* To use the address 0, see note 1 (“Broadcast” address) in the “Notes” section.
The 8000h value, present in the "Data" field, should be considered as a don’t care value, that is,
the value present in the device at this address will not be modified.
Example:
Set word 1403 (57Bh) of slave at address 1 (1h) with value 240 (F0h), “Main set point” in “Setpoint
group”.
Command from master to slave
Range
Byte
Slave address
01h
Function code
06h
Word address (high byte)
05h
Word address (low byte)
7Bh
Data
00h
Data
F0h
Error check (CRC-16) (low byte)
F9h
Error check (CRC-16) (high byte)
5Bh
Reply from slave to master
Range
Slave address
Function code
Word address (high byte)
Word address (low byte)
Data
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
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Byte
01h
06h
05h
7Bh
00h
F0h
F9h
5Bh
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170.IU0.RFS.00E
Function code 8: Diagnostic
By using this command, the master unit can check the communication system to Slaves.
Request from master to slave
Range
Byte
Slave address (1-255)
1
Function code (08)
1
Sub-function (high byte)
1
Sub-function (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (08)
1
Sub-function (high byte)
1
Sub-function (low byte)
1
Data
2
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
The Sub-function code will not be processed by Slave, any code is accept.
The Sub-function code and data passed in the request is returned (looped back) in the slave
replay. The entire replay message is identical to the request
Example:
Request from master to slave
Range
Byte
Slave address
01h
Function code
08h
Sub-function (high byte)
00h
Sub-function (low byte)
00h
Data
55h
Data
AAh
Error check (CRC-16) (low byte)
5Fh
Error check (CRC-16) (high byte)
24h
Reply from slave to master
Range
Slave address
Function code
Sub-function (high byte)
Sub-function (low byte)
Data
Data
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
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Byte
01h
08h
00h
00h
55h
AAh
5Fh
24h
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170.IU0.RFS.00E
Function code 15: Multiple bits writing
This function code is used by master unit to set/reset a consecutive group of bits (Max 24).
Command from master to slave
Range
Byte
Slave address (0*-255)
1
Function code (15)
1
Bit starting address (high byte)
1
Bit starting address (low byte)
1
Number of bits (high byte)
1
Number of bits (low byte)
1
Byte counter (n)
1
Data
n
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (15)
1
Bit starting address (high byte)
1
Bit starting address (low byte)
1
Number of bits (high byte)
1
Number of bits (low byte)
1
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
* To use the address 0, see note 1 (“Broadcast” address) in the “Notes” section.
The desired status of each bit is packed in the "Data" field (1 = ON, 0 = OFF).
The status imposed for read only bits will be ignored.
The command will be processed starting from the first bit and it will be executed or not executed
depending on the actual device status.
At the first error found, the command will be aborted and the slave will answer with an error.
Example:
Send to slave, at address 2 (2h), the following set of 2 bits:
Bit 2002 (7D2h) status = 0 (bit 0)
Status of output 3, output not energized
Bit 2003 (7D3h) status = 1 (bit 1)
Status of output 4, output energized
Filler
= 0 (bit 2)
Filler
= 0 (bit 3)
Filler
= 0 (bit 4)
Filler
= 0 (bit 5)
Filler
= 0 (bit 6)
Filler
= 0 (bit 7)
NOTE: 1 byte with 2 bits and 6 filler bits must be sent
Command from master to slave
Range
Byte
Slave address
02h
Function code
0Fh
Bit starting address (high byte)
07h
Bit starting address (low byte)
D2h
Number of bits (high byte)
00h
Number of bits (low byte)
02h
Byte counter
01h
Data
02h
Error check (CRC-16) (low byte)
A6h
Error check (CRC-16) (high byte)
E6h
Reply from slave to master
Range
Slave address
Function code
Bit starting address (high byte)
Bit starting address (low byte)
Number of bits (high byte)
Number of bits (low byte)
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
Byte
02h
0Fh
07h
D2h
00h
02h
75h
74h
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170.IU0.RFS.00E
Function code 16: Multiple words writing
This function code is used by the master unit to write a consecutive group of words .
The master unit can change a maximum of 20 words at a time.
Command from master to slave
Range
Byte
Slave address (0*-255)
1
Function code (16)
1
Word starting address (high byte)
1
Word starting address (low byte)
1
Number of words (high byte)
1
Number of words (low byte)
1
Byte counter (n)
1
Data
n
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
Reply from slave to master
Range
Byte
Slave address (1-255)
1
Function code (16)
1
Word starting address (high byte)
1
Word starting address (low byte)
1
Number of words (high byte)
1
Number of words (low byte)
1
Error check (CRC-16) (low byte)
1
Error check (CRC-16) (high byte)
1
* To use the address 0, see note 1 (“Broadcast” address) in the “Notes” section.
The data imposed for read only words will be ignored.
The command will be processed starting from the first word and it will be executed or not
executed depending on the actual device status.
At the first error found, the command will be aborted and the slave will answer with an error.
The 8000h value, present in the "data" field, should be considered as a don’t care value, this is,
the value present in the device at this address will not be modified.
Example:
Set words 1505 (5E1h), 1506 (5E2h), 1507 (5E3h) of slave at address 10 (Ah) with 40 (28h), don’t
care (8000h) and 300 (12Ch) values; “Proportional band”, “Hysteresis” and “Integral time” in
“Control group”.
Command from master to slave
Range
Byte
Slave address
0Ah
Function code
10h
Word starting address(high byte)
05h
Word starting address (low byte)
E1h
Number of words (high byte)
00h
Number of words (low byte)
03h
Byte counter
06h
Data
00h
Data
28h
Data
80h
Data
00h
Data
01h
Data
2Ch
Error check (CRC-16) (low byte)
F1h
Error check (CRC-16) (high byte)
DFh
Reply from slave to master
Range
Slave address
Function code
Word starting address (high byte)
Word starting address (low byte)
Number of words (high byte)
Number of words (low byte)
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
Byte
0Ah
10h
05h
E1h
00h
03h
D1h
89h
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170.IU0.RFS.00E
NOTES
1. "Broadcast" address
When using the writing codes (5, 6, 15 and
16) the slave address 0 is permitted: in this
case all the slaves connected accept the
command but do not give any reply.
2. Words format
Every time the information transfer is
performed by using 2 bytes (1 word of 16
bits), the first byte transmitted is the most
significant one. For the negative numbers the
"two complement" format is used.
3. Reply time
The slave will start to send a reply from 2 ms
to 700 ms after the end of the request
detected by counting the received bytes.
4. Decimal digits
The decimal point that may be present in the
value is ignored.
Example:
The value 204.6 is transmitted as 2046
(07FEh)
The value -12.50 is transmitted as -1250
(FB1Eh)
The number of decimal digits, if significant, is
stated for each parameter (see the DEC
column in the parameters tables).
Some parameters have a variable number of
decimal digits according to the configuration,
as described below:
PV number of decimal digits apply on
process variable [1105]
CT number of decimal digits apply on
current transformer read-out [1211]
OP number of decimal digits apply on
output power [1524]
5. Local/remote status
In this controller, unlike other Ero Electronic
devices, the “Local/remote status” setting
isn’t required. This means that the master
unit can modify any parameters without set
any local/remote status bit, moreover no “3
seconds timeout” will be applied.
6. Operative mode
"Operative mode" indicates the normal
functioning status of the device (controller).
In operative mode the master can read the
whole parameters; the device returns 8000h
for the meaningless one (for example: the
threshold of a not configured alarm).
The write operation is allowed only for a
restricted number of parameters (for
example: isn’t permitted to change the input
configuration). In operative mode the
controller checks the write data to be within
the allowable limits (for example: the main
set point must be inside the set point low and
high limits).
7. Configuration mode
“Configuration mode” is intended to set-up
the device, then the controller doesn’t work.
In configuration mode the master can read
and write the whole parameters.
In configuration mode, unlike the operative
mode, the device returns always a value for
each parameters, even for the meaningless
one; this is intended to clone exactly the unit.
Moreover, no check is done by the device
receiving parameters; it’s under the
responsibility of the master to send a valid
set of parameters. If the master fails to follow
the above rule, it will be impossible to switch
the controller in operative mode until the
whole set of parameters will be valid.
8. Read / write access permissions
The access permissions are stated for each
parameter in the description tables by means
of two columns named “read” and “write”
according the following meaning:
O access allowed in operative mode
C access allowed in configuration mode
L access allowed in calibration mode
F access allowed in factory test mode
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9. Software key for lock/unlock control
parameters
Due to the lack of frontal panel, no one
protection scheme is available for this
device.
10. Address space
The whole variables are addressable as
word as well as bit; the user may choose the
better way according to the condition.
Although we suggest to manage analog
variables as words and boolean variables as
bits, below is described the behavior to
access analog variables (example: alarm
threshold) as bits and boolean variables
(example: alarm status) as words.
- Reading analog variables as bits: if the
variable is not relevant in the actual device
configuration (word value 8000h) or if the
value is zero the bit is reset, otherwise the
bit is set.
- Writing analog variables as bits: the reset
bit means 0000h, the set bit means
0001h.
- Reading boolean variables as words: a
reset variable is reported as 0000h, a set
one is reported as 0001h.
- Writing boolean variables as words: send
0000h to reset the variable, send a value
different from 0000h and 8000h to set the
variable.
170.IU0.RFS.00E
11. Communication parameters at start
up.
When it is desired to regain the control of an
instrument with an unknown set of
communication parameter, you can operate
in two different way:
11.1. Make use of the CPI adapter. The
instrument automatically recognizes the
CPI adapter and it will use the following
communication parameter set:
- Address = 255
- Baud rate = 19200
- Bite format = 8 bit without parity
NOTE: this is a fixed parameters set and
it is not configurable.
11.2. At power up the instrument will start
using the same communication
parameter set used in presence of the
CPI adapter.
- If the instrument receives a correct
Modbus request within the first 3
seconds, it will continue to operate
with the same communication
parameters.
- If, during the 3 seconds time-out, the
instrument doesn’t receive a correct
request, it will set-up the
communication interface with the
parameter values previously
programmed.
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170.IU0.RFS.00E
ERROR REPLY
If the "error check" is wrong or the function code is not implemented or a buffer overflow has been
received, the slave does not send any reply to the master.
If other errors are detected in the request or command frame, or the slave cannot reply with the
requested values or it cannot accept the requested sets because it is in error condition, the slave
replies by forcing at "1" the bit 7 of the received "Function code" byte followed by an error code.
Error reply (from slave to master)
RANGE
Slave address
Function code (+80h)
Error code
Error check (CRC-16) (low byte)
Error check (CRC-16) (high byte)
BYTE
1
1
1
1
1
List of error codes
ERROR CODE
2
3
9
10
DESCRIPTION
Illegal data address
Illegal data value
Illegal number of data required
The parameter indicated cannot be modified
or command cannot be executed
Error 2 is issued only when the whole addresses involved in a read or write operation are not
implemented on the device.
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TITLE: RFS – User Manual
170.IU0.RFS.00E
DEVICE IDENTIFICATION GROUP (117)
Modbus
Address
117
118
119
DESCRIPTION
FIRMWARE DEVICE CLASS
Availability:
Always
Value:
413 for RFS
FIRMWARE DEVICE LETTER
Availability:
Always
Value:
‘A’ (41h)
FIRMWARE REVISION
Availability:
Always
Value:
Nr. of firmware revision
Manufactured trade mark
120
50 (32h)
R
E
A
D
W
R
I
T
E
D
E
C
OC
LF
OC
LF
OC
LF
OC
LF
Device identification code
121
OC
Note:
Number of software revision x 100 + identification L F
code 54 ( 36h )
122
Serial firmware identification code
Availability:
Always
Value:
0
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OC
LF
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170.IU0.RFS.00E
OPERATIVE GROUP (900)
Note: On this group are repeated some information present in other groups.
The purpose of this is to have these information at consecutive address.
This solution allows to maximize the data transfer rates between the RFS and the host
supervisory system.
R
W
Modbus
A
R
R
Default
Address
DESCRIPTION
N
E
I
D
Value
G
A T
E
E
D
E
C
OUT 1 Leakage current measure value (in Ampere)
900
O
CT
(Same as address 1201)
OUT 1 Load current measure value (in Ampere)
901
O
CT
(Same as address 1203)
OUT 2 value (in %)
902
0 / 100 O O OP
(Same as address 1501)
OUT 1 value (in %)
903
0 / 100 O O OP
(Same as address 1500)
STATUS
D15 = OUT 1 Leakage current measure updating
(See address 1202)
(0 =
Measure updated)
(1 = Measure not updated)
D14 = 0
(Reserved)
D13 = Status alarm 3
(0 = No alarm 1 = Alarm)
D12 = Status alarm 2
(0 = No alarm 1 = Alarm)
D11 = Status alarm 1
(0 = No alarm 1 = Alarm)
D10 = Status CT alarm
904
(0 = No alarm 1 = Alarm)
D 9 = OUT 1 Load current measure updating
(See address 1204)
(0 =
Measure updated)
(1 = Measure not updated)
D 8=0
(Reserved)
D 7 = Status of Out 4
( 0 = Out not energized
1 = Out energized )
D 6 = Status of Out 3
( 0 = Out not energized
1 = Out energized )
D 5 = Status of Out 2
( 0 = Out not energized
1 = Out energized )
D 4 = Status of Out 1
( 0 = Out not energized
1 = Out energized )
D 3 = Digital input status ( 0 = Contact open
1 = Contact closed)
D 2 = Auto / Manual
( 0 = Auto
1 = Manual)
D 1 = control output Enabled or disabled
( 0 = Enabled 1 = Disabled)
D 0 = SMART Enable or Disable
( 0 = Disabled 1 = Enabled)
O
Page GB 30/51
TITLE: RFS – User Manual
Modbus
Address
DESCRIPTION
170.IU0.RFS.00E
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
Filtered Input variable (in engineering units)
905
906
907
908
909
910
911
Notes:
When a measure error is detected, the "Data
field" contains one of these error codes:
30004 (7534h) = Under-range
30005 (7535h) = Over-range (or open input)
30014 (753Eh) = Error on reference junction
temperature (<-25 °C or >75 °C)
30050 (7562h) = Error on internal auto-zero
(Same as address 1101)
Input variable without filter (in engineering units)
Notes:
When a measure error is detected, the "Data
field" contains one of these error codes:
30004 (7534h) = Under-range
30005 (7535h) = Over-range (or open input)
30014 (753Eh) = Error on reference junction
temperature (<-25 °C or >75 °C)
30050 (7562h) = Error on internal auto-zero
(Same as address 1100)
Working set point (in engineering units)
(Same as address 1402)
Main set point (in engineering units)
(Same as address 1403)
Auxiliary set point (in engineering units)
(Same as address 1405)
Target set point (in engineering units)
(Same as address 1401)
Main volatile set point (in engineering units)
(Same as address 1404)
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SP L.
SP H.
SP L.
SP H.
O
PV
O
PV
O
PV
OC
LF
OC
LF
OC
PV
LF
OC
PV
LF
O
SP L.
SP H.
O
PV
O
PV
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Page GB 31/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
DEVICE MANAGEMENT GROUP (1000)
Modbus
Address
DESCRIPTION
R
A
N
G
E
R
E
A
D
W
R
I
T
E
OC
LF
OC
LF
D
E
C
Device mode
Range:
0 = Operative mode
1 = Configuration mode
2 = Calibration mode
3 = reserved
1000
1001
1002
1003
1004
Note:
When operative mode is set a “Parameter
Check Operation” is automatically performed
If an error is found the device answers with error code
10 and doesn’t enable the new status.
Otherwise the device stops any other address test,
answers immediately, resets and restarts in
operative mode
The set in “Calibration” mode
is allowed only from configuration mode
Execute the PCO (Parameter Check Operation).
It returns 0 if no error was found, otherwise it
returns the Modbus address of the first wrong
parameter.
Load default parameter values
Range:
0 = No operation
OC
LF
1 = Load default European table (TB1)
2 = Load default American table (TB2)
Note:
Using this command, the parameters related
with the serial link will change immediately but
the new values will become operative only
when the instrument comes back to the
operative mode.
Manual reset of the alarm conditions
Range:
0 = No operation
1 = Alarm Reset
Data Management in Operative Mode
Range:
0 = Only valid data are transmitted
1 = All the data are transmitted
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C
O
O
O
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Page GB 32/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
PROCESS VARIABLE INPUT GROUP (1100)
Modbus
Address
1100
1101
1102
DESCRIPTION
Measured value without filter (in engineering units)
Notes:
When an measure error is detected, the "Data
field" contains one of these error codes:
30004 (7534h) = Under-range
30005 (7535h) = Over-range (or input open)
30014 (753Eh) = Error on reference junction
temperature (<-25 °C or >75 °C)
30050 (7562h) = Error on internal auto-zero
Filtered measured value (in engineering units)
Note:
See “Measured value without filter” [1100]
Input type and range value for main input
Range:
0 = Tc L
1 = Tc L
2 = Tc J
3 = Tc J
4 = Tc K
5 = Tc K
6 = Tc N
7 = Tc R
8 = Tc S
9 = RTD Pt100
10 = RTD Pt100
11 = Linear
12 = Linear
13 = Linear
14 = Linear
15 = (reserved)
16 = (reserved)
17 = (reserved)
18 = (reserved)
19 = Tc L
20 = Tc J
21 = Tc K
22 = Tc N
23 = Tc R
24 = Tc S
25 = RTD Pt100
26 = RTD Pt100
27 = Tc T
28 = Tc T
(
0 ÷ 400.0 °C)
(
0 ÷ 900 °C)
( -100.0 ÷ 400.0 °C)
( -100 ÷ 1000 °C)
( -100.0 ÷ 400.0 °C)
( -100 ÷ 1370 °C)
( -100 ÷ 1400 °C)
(
0 ÷ 1760 °C)
(
0 ÷ 1760 °C)
(-200.0 ÷ 400.0 °C)
( -200 ÷ 800 °C)
(
0÷
60 mV)
(
12 ÷ 60 mv)
(
0 ÷ 20 mA)
(
4 ÷ 20 mA)
(
0 ÷ 1650 °F)
( -150 ÷ 1830 °F)
( -150 ÷ 2500 °F)
( -150 ÷ 2550 °F)
(
0 ÷ 3200 °F)
(
0 ÷ 3200 °F)
(-200.0 ÷ 400.0 °F)
( - 330 ÷ 1470 °F)
(-200.0 ÷ 400.0 °C)
( - 330 ÷ 750 °F)
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
O
PV
O
PV
Default
Value
TB1= 3
OC
LF
C
LF
TB2= 20
Page GB 33/51
TITLE: RFS – User Manual
Modbus
Address
DESCRIPTION
1103
Initial scale value (*)
1104
Full scale value (*)
1105
1106
Decimal point position PV (Process variable).
Range:
0 = No decimal figure
1 = One decimal figure
2 = Two decimal figures
3 = Three decimal figures
Note:
The write command is enabled only for linear
input.
Offset adjustment (in engineering units)
Note:
Not available for linear ranges
170.IU0.RFS.00E
R
A
N
G
E
-2000/4000
(for linear)
Range
limits
(for Tc/Rtd)
-2000/4000
(for linear)
Range
limits
(for Tc/Rtd)
-199 / 199
R
E
A
D
W
R
I
T
E
OC
LF
C
LF
PV
TB1=0
TB2=0
OC
LF
C
LF
PV
TB1=400
TB2=1000
OC
LF
C
LF
OC
LF
C
LF
D
E
C
Default
Value
TB1 = 0
TB2 = 0
PV
TB1 = 0
TB2 = 0
(*) Note: The minimum input span ([Full scale value] – [Initial scale value]), in absolute value, must
be greater than:
100 digits for linear input ranges
300 °C (550 °F) for Tc input ranges
100 °C (200 °F) for Rtd input ranges.
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Page GB 34/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
CURRENT TRANSFORMER INPUT AND ALARM GROUP (1200)
Modbus
Address
1200
R
A
N
G
E
DESCRIPTION
CT alarm status
( “Load” and “Leakage” alarms)
Range:
0 = No alarm
1 = Alarm
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
O
Note: Available only when the option is programmed
1201
OUT 1 Leakage current measured value
Ampere)
(in
O
CT
Note: Available only when the option is programmed
OUT 1 Leakage current measure updating flag
Range:
0 = Measure updated
1 = Measure not updated
1202
OUT 1 Load current measured value
1203
O
Notes:
1) Available only when the option is programmed.
2) If the OFF period is lower than 150 ms, the
instrument is not able to perform this measure.
This flag shows the status of the measure
(in
O
Ampere)
CT
Note: Available only when the option is programmed
OUT 1 Load current measure updating flag
Range:
0 = Measure updated
1 = Measure not updated
1204
1205
O
Notes:
1) Available only when the option is programmed.
2) If the ON period is lower than 150 ms, the
instrument is not able to perform this measure.
This flag shows the status of the measure
Threshold for alarm on Leakage current
(in Ampere)
0 / H. Scale
OC OC
CT
LF LF
TB1 = 50
TB2 = 50
0 / H. Scale
OC OC
CT
LF LF
TB1 = 100
TB2 = 100
Note: Available only when the option is programmed
1206
Threshold for alarm on Load current
Ampere)
(in
Note: Available only when the option is programmed
1207
Active period of the load (for the current
transformer)
Range:
0 = Option not provided
1 = The load is energized when Out1 is
active (Relay "ON" or SSR=1)
2 = The load is energized when Out1 is not
active (Relay "OFF" or SSR=0)
OC C
LF LF
TB1 = 0
TB2 = 0
Page GB 35/51
TITLE: RFS – User Manual
Modbus
Address
1208
DESCRIPTION
170.IU0.RFS.00E
R
A
N
G
E
CT Alarm reset type
Range:
0 = Automatic reset
1 = Manual reset
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 1
TB2 = 1
Note: Available only when the option is programmed
1209
CT Alarm action
Range:
0 = Direct action (relay energized in alarm
condition)
1 = Reverse action (relay de-energized in
alarm condition)
Note: Available only when the option is programmed
This configuration is the same made by
address 1806.
1210
CT range (in Ampere)
It is the nominal primary current of the current
transformer used.
10 / 100
OC C
LF LF
0
TB1 = 10
TB2 = 10
Note: Available only when the option is programmed
1211
Number of decimal figures for the CT
measurement
The resolution of the CT measurement is as
follow:
- 0.1 A for CT range lower than 20 A
1 A for CT range higher than 20 A
So that:
- When [1210] parameter is lower than 20 (A),
the [1211] parameter will be equal to 1
- When [1210] parameter is higher than 20 (A),
the [1211] parameter will be equal to 0
OC
LF
Note: CT alarm and Alarm 2 are in OR condition driving the output 3.
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TB1 = 1
TB2 = 1
Page GB 36/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
DIGITAL INPUT GROUP (1300)
Modbus
Address
DESCRIPTION
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
Digital input status
1300
Range
0 = Input not active (contact open)
1 = Input active (contact closed)
OC
LF
Digital input function
1301
Range
0 = Option not used
1 = Digital input used for “main set point”/”auxiliary
set point” selection (Input active means
Auxiliary set point).
2 = Digital input used to hold the set point ramp
execution (Input active means ramp hold).
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OC C
LF LF
TB1 = 0
TB2 = 0
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Page GB 37/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
SETPOINT GROUP (1400)
Modbus
Address
DESCRIPTION
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
1400
Selected set point
Range: 0 = Main set point
1 = Auxiliary set point
O
1401
Target set point (in engineering units)
O
PV
1402
Working set point (in engineering units)
O
PV
1403
Main set point (in engineering units)
1404
Volatile set point (in engineering units)
1405
Auxiliary set point (in engineering units)
Note: Available only if selectable
1406
Set point high limit (in engineering units)
1407
Set point low limit (in engineering units)
1408
Rate of change for positive set point
variation
(gradient in engineering units per minute)
1409
Rate of change for negative set point
variation
(gradient in engineering units per minute)
Default
Value
SP L. Limit / OC OC
PV
SP H. Limit L F L F
SP L. Limit /
O
O PV
SP H. Limit
TB1 = 0
TB2 = 0
TB1 = 0
TB2 = 0
SP L. Limit / OC OC
PV
SP H. Limit L F L F
TB1 = 0
TB2 = 0
SP L. Limit / OC OC
TB1 = 400
PV
H. Scale
LF LF
TB2 = 1000
L. Scale /
OC OC
TB1 = 0
PV
SP H. Limit L F L F
TB2 = 0
1 / 100
TB1 =
32767
OC OC
7FFFh
PV
(7FFFh)
LF LF
TB2 =
for step
7FFFh
change
1 / 100
TB1 =
32767
OC OC
7FFFh
PV
(7FFFh)
LF LF
TB2 =
for step
7FFFh
change
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Page GB 38/51
TITLE: RFS – User Manual
Modbus
Address
1410
DESCRIPTION
170.IU0.RFS.00E
R
A
N
G
E
Operative set point alignment at start-up
Range:
0 = The operative set point will be
aligned to the set point selected by
digital input or by the serial link
1 = The operative set point will be
aligned to the actual measured
value and then it will reach the
selected set point with the
programmed ramp
(Address 1408 / 1409).
NOTE: if the instrument detect an out of
range or an error condition on the
measured value, it will operate as
described for [1410] = 0
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
OC C
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 0
TB2 = 0
Set point selection source
1411
Range:
0 = Set point selected by digital input.
1 = Set point selected by serial link
(address 1412)
Set point selected by serial link
1412
Range: 0 = Main set point
1 = Auxiliary set point
Delta applied to the Main set point
(in engineering units)
1413
This value will be algebraically added
to the main set point (address 1403) and
then limited.
-6000 / 6000
O
-6000 / 6000
O
-6000 / 6000
O
Delta applied to the volatile set point
(in engineering units)
1414
This value will be algebraically added to
main set point (address 1404) and then
limited.
Delta applied to the Auxiliary set point
(in engineering units)
1415
This value will be algebraically added to
auxiliary set point (address 1405) and
then limited.
Page GB 39/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
Notes about set point management
NOTE 1
In order to make clear the result of different set of the various parameter, we have added the
following diagram.
Main SP [1403]
Main volatile SP
[1404]
TSP
Target set
point [1401]
Auxiliary SP
[1405]
Ramp up
[1408]
Ramp down
[1409]
Working
set point
[1402]
Selected SP
indicator
[1400]
SP selection by
serial link [1412]
SP selection
source [1411]
Digital input
[1301]
Ramp hold
OFF
NOTE: the main SP (1403) is a value memorized in EEPROM while the main volatile SP (1404) is
a value memorized in RAM. For this reason, when you make a profile setting the set point value by
serial link (e.g. with a supervisory system), it is advisable to use the main volatile SP, instead of
the main SP (the EEPROM has a limited number of write actions allowed while the RAM has no
limit).
NOTE 2
Parameters [1413], [1414] and [1415] allow you to increase or decrease a set point without
knowing the current set point value.
This solution allows you to modify of the same quantity the set point (Main set point, volatile set
point or auxiliary set point respectively) of different instruments at the same time.
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Page GB 40/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
CONTROL (OUTPUT 1) GROUP (1500)
Modbus
Address
DESCRIPTION
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
1500
OUT 1 value (in %)
0 / 100
O
O
OP
1501
OUT 2 value (in %)
0 / 100
O
O
OP
1502
Pid out value
-32767 /
32767
O
O
OP
1503
1504
Auto/manual function
Range:
0 = Auto
1 = Manual
Enable/disable control output
Range:
0 = Control enabled
1 = Control disabled
Default Value
OC OC
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 0
TB2 = 0
10 / 1000
(for H only)
1505
OC OC
LF LF
1
TB1 = 40
TB2 = 40
1 / 100
OC OC
LF LF
1
TB1 = 5
TB2 = 5
1 / 1200
OC OC
LF LF
0
TB1 = 240
TB2 = 240
OC OC
LF LF
0
TB1 = 30
TB2 = 30
15 / 1000
Proportional band (in % of the input span)
(for H/C)
0
(for ON/OFF)
1506
Hysteresis for ON / OFF control mode (in % of
the input span)
Note: Available only when Proportional band is set to
zero.
Integral time (in seconds)
1507
1508
Note:
The value 32767 (7FFFh) means that the integral
action is excluded
0 / 100
Integral pre-load (in % of the output span)
Default value for Heating action 30%
Default value for Heating/cooling action 0%
(for H only)
-100 / 100
(for H/C)
1509
Derivative time (in seconds)
0 / 600
1510
Out 1 Cycle time (in seconds)
1 / 200
1511
Relative cooling gain
20 / 100
Note: Available only for HC control
Dead band/overlap between H/C outputs
% of the proportional band)
1512
1513
Note: Available only for HC control
OC
LF
OC
LF
OC
LF
0
0
2
TB1 = 60
TB2 = 60
TB1 = 15
TB2 = 15
TB1 = 100
TB2 = 100
(in
Notes:
1) Available only for HC control
2) A negative value produces an dead band while
a positive value produces an overlap
Out 2 Cycle time (in seconds)
OC
LF
OC
LF
OC
LF
-20 / 50
OC OC
LF LF
0
TB1 = 0
TB2 = 0
1 / 200
OC OC
LF LF
0
TB1 = 10
TB2 = 10
Page GB 41/51
TITLE: RFS – User Manual
Modbus
Address
1514
170.IU0.RFS.00E
R
A
N
G
E
0 / 100
DESCRIPTION
Output high limiter (in %) (**)
(for H only)
-100 / 100
R
E
A
D
W
R
I
T
E
D
E
C
OC OC
0P
LF LF
Default Value
TB1 = 100
TB2 = 100
(for H/C)
1515
Time duration of the output power limiter (soft
start) (in minutes) (**)
1516
Control output max rate of rise (in percent of the
output per second)
1517
1518
1519
1520
1521
Note:The value 32767 (7FFFh) means that the limiting
action is always on
Note:The value 32767 (7FFFh) means that no ramp
limitation is imposed.
Out 1 action
Range:
0 = Direct
1 = Reverse
Control action type
Range:
0 = The process is controlled by PID actions
1 = The process is controlled by PI actions
Threshold to enable the soft start (output power
limiting) (in engineering units)
Inhibit reset band extension
A positive value increases the high limit of the
Anti-reset-wind up (over set point)
A negative value decreases the low limit of the
Anti-reset-wind up (under set point)
Device status at instrument start up
Range:
0 = It starts always in auto mode
1 = It starts in the same way it was left prior
to the power shut down. If in manual
mode the power output is set to 0
2 = It starts in the same way it was left prior
to the power shut down. If in manual
mode the power output will be equal to
the last value used left prior to the power
shut down.
3 = It starts always in manual mode with
power output set to 0
1 / 540
OC OC
LF LF
1 / 25
TB1 = 7FFFh
OC OC
OP TB2 = 7FFFh
LF LF
L. Scale /
H. Scale
-30 / +30
(in % of the
proportional
band)
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0
TB1 = 7FFFh
TB2 = 7FFFh
OC C
LF LF
TB1 = 1
TB2 = 1
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
PV
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 10
TB2 = 10
0
OC C
LF LF
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TB1 = 2
TB2 = 2
Page GB 42/51
TITLE: RFS – User Manual
Modbus
Address
1522
1523
170.IU0.RFS.00E
R
A
N
G
E
DESCRIPTION
Condition for output safety value
Range:
0 = No safety value (Standard setting)
1 = Safety value applied when over range or
under range condition is detected
2 = Safety value applied when over range
condition is detected
3 = Safety value applied when under range
condition is detected
Output safety value (in %)
When the controller detects an out range condition.
Note: Available only if used
R
E
A
D
W
R
I
T
E
D
E
C
Default Value
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
OP
LF LF
TB1 = 0
TB2 = 0
0 / 100
(for H only)
-100 / 100
(for H/C)
Number of decimal figures of parameters with
1524
DEC attribute set in OP
OC
LF
(**) NOTE: the parameters [1514] and [1515] allow to set the soft start function.
At power up the instrument limits the power output (using [1514]) for a programmed time (set by
[1515].
This function allows to gradually warm up the machine during start up in order to delete thermal
strength and to protect the raw material.
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Site web : www.hvssystem.com
Page GB 43/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
SMART GROUP (1600)
Modbus
Address
1600
1601
1602
DESCRIPTION
R
A
N
G
E
Tune status
Range:
0 = No tune
1 = Tune
Adaptive status
Range:
0 = No adaptive
1 = Adaptive
Smart enable/disable
Range:
0 = Disable
1 = Enable
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
O
O
OC OC
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
Note: Reading, this bit is logical “or” between Tune
and Adaptive status
1603
Relative cooling gain calculated by the smart
algorithm
Range:
0 = Smart does not calculate R.C.G.
1 = Smart calculates R.C.G.
Note: Available only for HC control
Type of cooling media
Range
0 = Air is used as cooling media
1 = Oil is used as cooling media
2 = Direct water is used as cooling media
1604
Changing [1604], the instrument forces the cycle time
and relative cooling gain parameter to the default
value related with the chosen cooling media
When [1604] = AIr
- Cy2 = 10 s and rC = 1.00
[1604] = OIL
- Cy2 = 4 s and rC = 0.80
[1604] = H2O - Cy2 = 2 and rC = 0.40
Note: Available only for HC control
1605
Max value of proportional band calculated by the Min. Value OC C
smart algorithm
/ 1000
LF LF
1
TB1 = 300
TB2 = 300
1606
Min value of proportional band calculated by the
smart algorithm
10 /
OC C
Max. value L F L F
1
TB1 = 15
TB2 = 15
15 /
OC C
Max. value L F L F
1
TB1 = 10
TB2 = 10
OC C
LF LF
0
TB1 = 50
TB2 = 50
Note: Not available for HC control
1607
Min value of proportional band calculated by the
smart algorithm
Note: Available only for HC control
1608
Min value of integral time calculated by the
smart algorithm (in seconds)
1 / 120
Page GB 44/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
ALARM 1 (OUTPUT 2) GROUP (1700)
Modbus
Address
1700
DESCRIPTION
R
A
N
G
E
Alarm 1 status
Range:
0 = No alarm
1 = Alarm
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
O
Note:
Available only if AL1 is configured
Alarm 1 threshold
L. Scale /
H. Scale
(for Process alarm)
1701
Note:
Available only if AL1 is configured
0 / 500
(for Band alarm)
OC OC
PV
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 1
TB2 = 1
-500 / 500
(for deviation alarm)
Alarm 1 hysteresis
1702
1703
1704
(Range: from 0.1% to 10.0 % of the range
selected with [1103] and [1104] parameters
or 1 LSD).
Note:
Available only if AL1 is configured
Out 2 function
Range:
0 = Output not used
1 = Output used as alarm 1 output
(Process alarm)
2 = Output used as alarm 1 output
(Band alarm)
3 = Output used as alarm 1 output
(Deviation alarm)
4 = Output used as cooling output
Alarm 1 operating mode
Range:
0 = High alarm (outside for band
alarm)
1 = Low alarm (inside for band
alarm)
1 / 100
1
OC C
LF LF
TB1 = 1
TB2 = 1
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
Note:
Available only if AL1 is configured
1705
Alarm 1 reset type
Range:
0 = Automatic reset
1 = Manual reset
Note:
Available only if AL1 is configured
Page GB 45/51
TITLE: RFS – User Manual
Modbus
Address
1706
DESCRIPTION
Alarm 1 action
Range:
0 = Direct action (relay energized in
alarm condition)
1 = Reverse action (relay
de-energized in alarm condition)
170.IU0.RFS.00E
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
OC C
LF LF
TB1 = 1
TB2 = 1
OC C
LF LF
TB1 = 0
TB2 = 0
Note:
Available only if AL1 is configured
Alarm 1 stand-by (mask) function
Range:
0 = No standby function
1 = Standby function
1707
Notes:
1) Available only if AL1 is configured
2) If the alarm is programmed as band or
deviation alarm, this function masks the
alarm condition after a set point change
or at the instrument start-up until the
process variable reaches the alarm
threshold plus or minus hysteresis.
If the alarm is programmed as a
process alarm, this function masks the
alarm condition at instrument start-up
until process variable reaches the
alarm threshold plus or minus
hysteresis.
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
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Page GB 46/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
ALARM 2 (OUTPUT 3) GROUP (1800)
Modbus
Address
1800
DESCRIPTION
R
A
N
G
E
Alarm 2 status
Range:
0 = No alarm
1 = Alarm
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
O
Note:
Available only if AL2 is configured
Alarm 2 threshold
1801
Note:
Available only if AL2 is configured
L. Scale /
H. Scale
(for process alarm)
0 / 500
(for band alarm)
OC OC
PV
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 1
TB2 = 1
-500 / 500
(for deviation alarm)
Alarm 2 hysteresis
1802
1803
1804
(Range: from 0.1% to 10.0 % of the range
selected with [1103] and [1104] parameters
or 1 LSD).
Note:
Available only if AL2 is configured
Out 3 function
Range:
0 = Output not used for alarm 2
1 = Output used as alarm 2 output
(Process alarm)
2 = Output used as alarm 2 output
(Band alarm)
3 = Output used as alarm 2 output
(Deviation alarm)
Note:
Alarm 2 and CT alarm outputs are
in OR condition.
Alarm 2 operating mode
Range:
0 = High alarm (outside for band
alarm)
1 = Low alarm (inside for band
alarm)
1 / 100
1
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
Note:
Available only if AL2 is configured
1805
Alarm 2 reset type
Range:
0 = Automatic reset
1 = Manual reset
Note:
Available only if AL2 is configured
Page GB 47/51
TITLE: RFS – User Manual
Modbus
Address
1806
DESCRIPTION
170.IU0.RFS.00E
R
A
N
G
E
Alarm 2 action
Range:
0 = Direct action (relay energized in
alarm condition)
1 = Reverse action (relay
de-energized in alarm condition)
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
OC C
LF LF
TB1 = 1
TB2 = 1
OC C
LF LF
TB1 = 0
TB2 = 0
Note: This configuration is the same of that
at address 1209
Available only if AL2 is configured
Alarm 2 stand-by (mask) function
Range:
0 = No standby function
1 = Standby function
1807
Notes:
1) Available only if AL2 is configured
2) If the alarm is programmed as band or
deviation alarm, this function masks the
alarm condition after a set point change
or at the instrument start-up until the
process variable reaches the alarm
threshold plus or minus hysteresis.
If the alarm is programmed as a
process alarm, this function masks the
alarm condition at instrument start-up
until process variable reaches the
alarm threshold plus or minus
hysteresis.
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
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Site web : www.hvssystem.com
Page GB 48/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
ALARM 3 (OUTPUT 4) GROUP (1900)
Modbus
Address
1900
DESCRIPTION
R
A
N
G
E
Alarm 3 status
Range:
0 = No alarm
1 = Alarm
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
O
Note:
Available only if AL3 is configured
Alarm 3 threshold
1901
Note:
Available only if AL3 is configured
L. Scale /
H. Scale
(for Process alarm)
0 / 500
(for Band alarm)
OC OC
PV
LF LF
TB1 = 0
TB2 = 0
OC OC
LF LF
TB1 = 1
TB2 = 1
-500 / 500
(for deviation alarm)
Alarm 3 hysteresis
1902
1903
1904
(Range: from 0.1% to 10.0 % of the range
selected with [1103] and [1104] parameters
or 1 LSD).
Note:
Available only if AL3 is configured
Out 4 function
Physically available only through bus
connector J2
Range:
0 = Output not used for alarm 3
1 = Output used as alarm 3 output
(Process alarm)
2 = Output used as alarm 3 output
(Band alarm)
3 = Output used as alarm 3 output
(Deviation alarm)
Alarm 3 operating mode
Range:
0 = High alarm (outside for band
alarm)
1 = Low alarm (inside for band
alarm)
1 / 100
1
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
OC C
LF LF
TB1 = 0
TB2 = 0
Note:
Available only if AL3 is configured
1905
Alarm 3 reset type
Range:
0 = Automatic reset
1 = Manual reset
Note:
Available only if AL3 is configured
Page GB 49/51
TITLE: RFS – User Manual
Modbus
Address
1906
DESCRIPTION
Alarm 3 action
Range:
0 = Direct action (relay energized in
alarm condition)
1 = Reverse action (relay
de-energized in alarm condition)
170.IU0.RFS.00E
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
OC C
LF LF
TB1 = 1
TB2 = 1
OC C
LF LF
TB1 = 0
TB2 = 0
Note:
Available only if AL3 is configured
Alarm 3 stand-by (mask) function
Range:
0 = No standby function
1 = Standby function
1907
Notes:
1) Available only if AL3 is configured
2) If the alarm is programmed as band or
deviation alarm, this function masks the
alarm condition after a set point change
or at the instrument start-up until the
process variable reaches the alarm
threshold plus or minus hysteresis.
If the alarm is programmed as a
process alarm, this function masks the
alarm condition at instrument start-up
until process variable reaches the
alarm threshold plus or minus
hysteresis.
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
E-mail:hvssystem@hvssystem.com
Site web : www.hvssystem.com
Page GB 50/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
DIGITAL OUTPUTS GROUP (2000)
Modbus
Address
2000
2001
2002
2003
R
E
A
D
DESCRIPTION
Output 1 status
Range
0 = Output not energized
1 = Output energized
Output 2 status
Range
0 = Output not energized
1 = Output energized
Note:
Writing to this parameter is allowed in
operative mode only if the output is not driven
by an internal function (like alarm).
Output 3 status
Range and note: see “Status of output 2”
Output 4 status
Range and note: see “Status of output 2”
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
W
R
I
T
E
D
E
C
OC C
LF LF
OC OC
LF LF
OC OC
LF LF
OC OC
LF LF
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Site web : www.hvssystem.com
Page GB 51/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
COMMUNICATION GROUP (2100)
Modbus
Address
DESCRIPTION
R
A
N
G
E
R
E
A
D
W
R
I
T
E
D
E
C
Default
Value
Serial link device address
2100
2101
Note:
When you set a new value, it will become
operative after an instrument resets or removing
the CPI. If you made a request before the reset
the device will reply the new value but it continue
to use the old one.
Keep attention to the data set because at the
instrument start-up, if incompatible data are found,
the serial line will be set with fixed parameters:
Address
255
Baud rate 19200
Byte format
8 bits without parity
Baud rate for serial link
Range:
0 = 600 Baud
1 = 1200 Baud
2 = 2400 Baud
3 = 4800 Baud
4 = 9600 Baud
5 = 19200 Baud
1 / 254
OC OC
LF LF
TB1 = 1
TB2 = 1
OC OC
LF LF
TB1 = 5
TB2 = 5
OC OC
LF LF
TB1 = 2
TB2 = 2
Note:
See note on “Serial link device address”
parameter.
2102
Byte format for serial link
Range:
0 = 8 bits + even parity
1 = 8 bits + odd parity
2 = 8 bits without parity
Note:
See note on “Serial link device address”
parameter.
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
E-mail:hvssystem@hvssystem.com
Site web : www.hvssystem.com
Page GB 52/51
TITLE: RFS – User Manual
GENERAL SPECIFICATIONS
Case : Polycarbonate dark grey color selfextinguishing degree: V2 according to UL 746C.
Protection: IP20
Terminals: 23 screw terminals ( screw M3, for
cables from 0.25 to 2.5 mm2 or from AWG 22 to
AWG 14 ) with connections diagram.
Dimensions: DIN 43700 120 x 101 x 22.5 mm.
Weight: - of the RFS = 140 g.
- of the common I/O unit = 110 g.
Power supply: 24 V AC/DC (+ 10 % of the
nominal value).
Power consumption: 6 VA max (4 W).
Sampling time: 250 ms for linear inputs
500 ms for TC and RTD inputs.
Accuracy: + 0,2% f.s.v.. + 1 digit @ 25 °C
ambient temperature.
Common mode rejection: >120 dB @ 50/60 Hz.
Normal mode rejection: >60 dB @ 50/60 Hz.
Electromagnetic compatibility and safety
requirements: This instrument is marked CE.
Therefore, it is conforming to council directives
89/336/EEC and to council directives 73/23/EEC
and 93/68/EEC (reference harmonized standard
EN 61010-1).
Installation category (over-voltage category):
CAT II / 50V
Pollution degree: 2
Operative temperature: from 0 to 50 °C (+32 to
122 °F).
Storage temperature: -20 to +70 °C (-4 to 158
°F)
Humidity: from 20 % to 85% RH, non condensing.
Operating altitude:up to 2000mt
170.IU0.RFS.00E
Type
STD
J
IEC 584-1
Eng
unit
°C
°F
K
IEC 584-1
°C
°F
L
TC
DIN 43710
- 1977
N
IEC 584-1
R
IEC 584-1
S
IEC 584-1
T
IEC 584-1
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
Tempe
rature
Range
drift
(PPM)
-100.0
400.0
400
-100
1000
200
-150
1830
-100.0
400.0
400
-100
1370
200
-150
2500
0.0
400.0
400
0
900
200
0
1650
-100
1400
200
-150
2550
0
1760
500
0
3200
0
1760
500
0
3200
-200.0
400.0
400
-330
750
B) RTD (Resistance Temperature Detector)
Type: Pt 100 3 wires connection.
Line resistance: automatic compensation up to
20 Ω/wire with not measurable error.
Engineering units: °C or °F programmable.
RTD sensor current: 130 µA
Burnout: up scale. NOTE: a special test is
provided to signal OVERRANGE when input
resistance is less than 12 Ω.
INPUTS
A) THERMOCOUPLE
Type : L -J -K -N -R -S -T. °C/°F selectable.
External resistance: 100 Ω max.
Burn out: It is shown as an overrange (standard)
or an underrange condition (selectable by cut and
short)
TC sensor current: 150 nA.
Cold junction: automatic compensation from 0 to
50 °C.
Cold junction accuracy : 0.1 °C/°C
Input impedance: > 1 MΩ
RTD
2 rue René Laennec 51500 Taissy France
Fax: 03 26 85 19 08, Tel : 03 26 82 49 29
Type
STD
Pt100
DIN
43760
Eng
unit
°C
°F
Range
-200.0
-200
-200.0
-330
400.0
800
400.0
1470
E-mail:hvssystem@hvssystem.com
Site web : www.hvssystem.com
Tempe
rature
drift
(PPM)
500
400
800
400
Page GB 53/51
TITLE: RFS – User Manual
170.IU0.RFS.00E
C) LINEAR INPUTS
Read-out: programmable from -2000 to +4000.
Decimal point: programmable in any position
Burn out: the instrument shows the burn out
condition as an underrange condition for 4-20 mA,
0-60 mV and 12-60 mV input types.
Sensor
Current
Voltage
Type
0/20 mA
4/20 mA
0/60 mV
12/60 mV
Input
impedance
<5Ω
<5Ω
> 1MΩ
> 1MΩ
Temperature
drift (ppm/°C
of full span)
300
300
D) LOGIC INPUT
The instrument is equipped with one
programmable input from contact (voltage free)
NOTES:
1) Use an external dry contact capable of
switching 5 mA, 7.5 V DC.
2) The instrument needs 100 ms to recognize a
contact status variation.
3) The logic input is isolated by the measuring
input.
C) CURRENT TRANSFORMER INPUT
Input current: 50 mA rms 50/60 Hz.
Read-out: selectable between 10 and 100 A.
Resolution:
- 0.1 A for 20 A range.
- 1 A for all the other ranges.
Active period:
- for relay output: NO or NC programmable
- for SSR drive output: logic level 1 or 0
programmable.
Minimum time duration of the active period:
50 ms.
SET POINTS
This instrument allows to use 2 set points: main
SP and auxiliary SP (SP2).
Set point transfer:
The transfer between one set point to another (or
between two different set point values) may be
realized by a step transfer or by a ramp with two
different programmable rate of change (ramp up
and ramp down).
Slope value: 1 - 100 eng. unit/min or step.
Set points limiter: programmable.
CONTROL ACTIONS
Control action: PID + SMART
Type: One (heating or cooling) or two (heating and
cooling) control outputs.
Proportional Band (Pb):
Range: - from 1.0 to 100.0 % of the input span for
process with one control output.
- from 1.5 to 100.0 % of the input span for
process with two control outputs.
When Pb=0, the control action becomes ON/OFF.
Hysteresis (for ON/OFF control action):
from 0.1% to 10.0% of the input span.
Integral time (Ti): from 1s to 20 min. or
excluded.
Derivative time (Td): from 0 s to 10 min.
If zero value is selected, the derivative action is
excluded.
Integral pre-load:
- from 0 to 100 % for one control output
- from -100 (cooling) to +100 % (heating) for two
control outputs.
SMART: enabling/disabling
Auto/Manual mode: selectable.
Manual/Auto transfer: bumpless method type
OUTPUTS
Control output updating time :
- 250 ms when a linear input is selected
- 500 ms when a TC or RTD input is selected.
Action: direct/reverse programmable.
Output status indication: four indicators (OUT 1,
2, 3 and 4) are lit when the respective outputs are
in ON condition.
Output level limiter:
- For one control medium: from 0 to 100 % .
- For two control mediums: from -100 to +100 % .
Cycle times:
- For out 1 it is programmable from 1 to 200 s.
- For out 2 it is programmable from 1 to 200 s.
Relative cooling gain: programmable from
0.20 to 1.00.
Overlap/dead band: programmable from - 20 %
to + 50 % of the proportional band
Page GB 54/51
TITLE: RFS – User Manual
OUTPUT 1
Function: programmable as heating or cooling
output.
Type:
a) Relay output with SPST contact;
contact rating 3A / 250 V AC on resistive load.
b) Logic voltage for SSR drive.
Logic status 1: 24 V +20% @ 1 mA.
14 V +20% @ 20 mA
Logic status 0: <0.5 V
OUTPUT 2
Function: programmable as:
- control output (cooling)
- Alarm 1 output
Type:
a) Relay output with SPST contact;
contact rating 3A / 250 V AC on resistive load.
b) Logic voltage for SSR drive.
Logic status 1: 24 V +20% @ 1 mA.
14 V +20% @ 20 mA
Logic status 0: <0.5 V
OUTPUT 3
Function: Alarm 2 output.
Type: relay with SPDT contact
Contact rated: 3 A at 250 V AC on resistive load.
OUTPUT 4
Output type: open collector, optically isolated with
respect to the other circuits.
Rating:
max 10 mA at 48 V
ALARMS
Actions: Direct or reverse acting.
Alarm functions: each alarm can be configured
as process alarm, band alarm or deviation alarm.
Alarm reset: automatic or manual reset
programmable on each alarm.
Stand by (mask) alarm: each alarm can be
configured with or without stand by (mask)
function.
This function allows to delete false indication at
instrument start up and/or after a set point change.
Process alarm:
Operative mode : High or low programmable.
Threshold : programmable in engineering unit
within the input span.
Hysteresis: programmable from 0.1 % to 10.0 %
of the input span ([1104] – [1103]).
170.IU0.RFS.00E
Band alarm
Operative mode: Inside or outside
programmable.
Threshold : programmable from 0 to 500 units.
Hysteresis : programmable from 0.1 % to 10.0 %
of the input span.
Deviation alarm:
Operative mode : High or low programmable.
Threshold : programmable from - 500 to +500
units.
Hysteresis : programmable from 0.1 % to 10.0 %
of the input span.
Communication interface
Type:
Protocol:
Baud-rate:
RS-485, opto-isolated
Modbus RTU, device acts as slave
600, 1200, 2400, 4800, 9600 or
19200 baud
Data format: 8 bit without parity, 8 bit even parity
or 8 bit odd parity
Slave number: up to 120 RFS unit could be
connected to the same RS-485
network without using repeaters
MAINTENANCE
1) REMOVE POWER FROM THE POWER
SUPPLY TERMINALS AND FROM RELAY
OUTPUT TERMINALS
2) Using a vacuum cleaner or a compressed air
jet (max. 3 kg/cm2) remove all deposit of dust
and dirt which may be present on the louvers
and on the internal circuits trying to be careful
for not damage the electronic components.
3) To clean external plastic or rubber parts use
only a cloth moistened with:
- Ethyl Alcohol (pure or denatured) [C2H5OH] Isopropyl Alcohol (pure or denatured)
[(CH3)2CHOH] or
- Water (H2O)
4) Verify that there are no loose terminals.
5) Before re-power the instrument be sure that it
is perfectly dry.
6) Turn the instrument ON.
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