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5. MODBUS COMMUNICATION PROTOCOL
5.8 Communication Data List
The communication data list summarizes data addresses (holding resister numbers), names, attributes, setting ranges and factory set values.
Address
00H
03H
04H
05H
06H
07H
08H
0BH
0CH
0DH
0EH
Name
(Attribute
Data range
RO: Read only, R/W: Read and Write)
Factory set value
Attribute
Measured value (PV) Within input range.
Alarm 1 status 0: OFF 1: ON
Alarm 2 status
Burnout
Set value (SV)
Alarm 1 set value
Alarm 2 set value
Control loop break alarm
Control loop break alarm deadband
Autotuning
Self-tuning
0: OFF
0: OFF
1: ON
1: ON
Within input range.
-----
-----
-----
-----
Temperature input: 0 or 0.0
Voltage/current inputs: 0
Temperature input:
50 or 50.0
RO
RO
RO
RO
R/W
Process alarm, SV alarm:
Setting limiter (low limit) to setting limiter (high limit)
Deviation alarm: -span to +span
However, within -1999 to +9999 ° C
[ ° F] or -199.9 to +999.9 ° C [ ° F]
0.0 to 200.0 minutes
(0.0: OFF)
0 (0.0) to span
However, less than 9999
0: Autotuning OFF
1: Autotuning ON
After Autotuning is completed, setting will automatically change to
0.
0: Self-tuning (ST) OFF
1: Self-tuning (ST) ON
Voltage/current inputs: 5.0
8.0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Continued on the next page.
1
2
3
4
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IMR01D02-E3
5. MODBUS COMMUNICATION PROTOCOL
Address
0FH
10H
11H
12H
13H
14H
15H
16H
17H
Name
(Attribute
Data range
RO: Read only, R/W: Read and Write)
Factory set value
Attribute
R/W Heat-side proportional band
(P)
Integral time (I)
Temperature input:
0 (0.0) to span or 9999 (999.9) ° C [ ° F]
Voltage/current inputs:
0.1 to span (0 or 0.0: ON/OFF action)
Cannot be written while the self-tuning
(ST) function is on, only Read is available.
0 to 3600 seconds (0: PD action)
Cannot be written while the self-tuning
(ST) function is on, only Read is available.
Deviation time (D) 0 to 3600 seconds (0: PI action)
Cannot be written while the self-tuning
(ST) function is on, only Read is available.
Anti-reset windup 0 to 100 % of heat-side proportional band (0: Integral action OFF)
Cannot be written while the self-tuning
(ST) function is on, only Read is available.
Heat-side proportioning cycle time
1 to 100 seconds
Temperature input:
30 or 30.0
Voltage/current inputs: 3.0
240
60
100
Relay contact output: 20
Voltage pulse output: 2
100 Cool-side proportional band
1 to 1000 % of heat-side proportional band
Overlap/deadband -span to +span
However, within -1999 to +9999 ° C [ ° F] or -199.9 to +999.9 ° C [ ° F]
1 to 100 seconds Cool-side proportioning cycle time
0 or 0.0
Relay contact output: 20
Voltage pulse output: 2
PV bias -span to +span
However, within -1999 to +9999 ° C [ ° F] or -199.9 to +999.9 ° C [ ° F]
Temperature input: 0 or 0.0
Voltage/current inputs: 0.0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
5
5
5
Continued on the next page.
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5. MODBUS COMMUNICATION PROTOCOL
42
Address
18H
19H
1AH
1BH
1CH
1DH
1EH
Name
(Attribute
Data range
RO: Read only, R/W: Read and Write)
Factory set value
Attribute
0 R/W Set data lock function 6
RUN/STOP function
Digital filter
EEPROM storage mode 7
EEPROM storage status 8
Heat-side manipulated output value
Cool-side manipulated output value
0 to 7
0: RUN 1: STOP
0 to 100 seconds (0: OFF)
0: Backup mode
(Set values are store to the EEPROM)
1: Buffer mode
(No set values are store to the EEPROM)
0: Mismatch
1: Match
-5.0 to +105.0 %
-5.0 to +105.0 %
0
0
0
-----
-----
-----
R/W
R/W
R/W
RO
RO
RO
1 If no alarm for first alarm or control loop break alarm is selected, the attribute becomes RO.
2 If no alarm for second alarm is selected, the attribute becomes RO.
3 If control loop break alarm for first alarm is not selected, the attribute becomes RO.
4 If the heat/cool PID control with autotuning (water cooling/air cooling) is selected, or the set value of any one of the heat/cool proportional band, integral time, derivative time and anti-reset windup is set to 0, the attribute becomes RO.
5 If heat/cool PID control with autotuning (water cooling/air cooling) for control type is not selected, the attribute becomes RO.
6 Details of set data lock function:
Set data
0
1
2
3
4
5
6
7
Set value (SV)
×
×
×
×
−
−
−
−
Alarm setting
(First alarm, Second alarm)
×
×
×
×
−
−
−
−
Other setting items
×
−
×
−
×
−
×
−
(-) Unsettable-Data locked ( × ) Settable-Data unlocked
The data lock function only prevents setting changes being made from the front keys. Setting changes can still be made through communication transmission.
Continued on the next page.
IMR01D02-E3
5. MODBUS COMMUNICATION PROTOCOL
7 The non-volatile memory (EEPROM) has limitations on the number of memory rewrite times. If the buffer mode is selected as an EEPROM storage mode, all of the set values changed are not written to the EEPROM and thus a problem of limitations on the number of memory rewrite times can be solved. When the memory is used to frequently change the set value via communication, select the buffer mode.
When selecting any EEPROM storage mode, take notice of the following.
• If power failure occurs while the buffer mode is selected, the set value returns to the value before the storage mode is selected.
• If the buffer mode is changed to the backup mode, all of the set values at that time are stored to the EEPROM. If necessary to backup the final value of each set item, select the backup mode.
• When the power is turned on, the backup mode is always set.
8 The contents of the buffer memory and those of the EEPROM can be checked.
When data is 0: The contents of the buffer memory do not match with those of the EEPROM.
• As data is being written to the EEPROM in backup mode, do not turn the power off. If turned off, no set values are stored.
• If the set value is changed after the backup mode is changed to the buffer mode,
0 is set (mismatch). As the set value changed is not backup, select the backup mode if necessary.
When data is 1: The contents of the buffer memory match with those of the EEPROM.
(Data write to the EEPROM is completed.)
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