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1
Chapter
2
Configurable FLEX I/O
Analog Module Features
What This Chapter Contains
Read this chapter to familiarize yourself with configurable features on the input and output analog modules.
For Information On
Select Your 1794-IE8H FLEX I/O Analog
Input Module’s Operating Features
Select Your 1794-OE8H FLEX I/O Analog
Output Module’s Operating Features
Understand Image Table Mapping and
Instance: Slot number (range from 1 to 8 with 1 being the I/O module closest to the adapter
See Page
HART configurable features described in this chapter include the following
Table 2.1 Analog/Digital Configurable Features on the FLEX I/O Analog I/O Modules
1794-IE8H Input Module Features
Fault Mode
Remote Transmitter Error Up or Down
High Low Error Level
Input Filter Cutoff
Data Format
1794-OE8H Output Module Features
Output Enable
Module Fault State Mode
Local Fault Mode
Digital Output
Latch Retry Mode
Global Reset
Analog Digital State
Analog Fault State
Digital Fault State
Data Format
Fault Alarm
Publication 1794-UM063A-EN-P - March 2006
2-2 Configurable FLEX I/O Analog Module Features
IMPORTANT
You must use the I/O configuration portion of your PLC programming software to select and configure these features.
This manual assumes familiarity with the programming software. A brief description of each module feature is provided here. For more information on your programming software, see the software user manual.
Select Your 1794-IE8H
FLEX I/O Analog Input
Module’s Operating
Features
All features of the 1794-IE8H analog input module are independently configurable in two four-channel groups (channel 0 to 3 & channel 4 to 7).
IMPORTANT
The default selection value for all parameters is 0.
Fault Mode
Your input modules are capable of indicating various fault conditions, depending on the input signal value. Use the Fault Mode feature to enable or disable two alarms:
• Remote Fault alarm
• Local Fault alarm
Use your programming software to set the Fault mode bit to 0 to disable these alarms. Set the bit to 1 to enable them.
IMPORTANT
Fault mode will only enable or disable the Remote and Local
Fault alarms. It does not affect the Underrange and Overrange alarms. They are always active.
For more information on the Remote Fault Alarm, see page 1-5. For more
information on the Local Fault Alarm, see page 1-6.
Remote Transmitter Error Up or Down
A second feature of your input module that affects use of the Remote Fault alarm is the Remote Transmitter Error Up or Down feature. Used in conjunction with the High Low Error level, this feature designates whether remote faults are displayed with input signal readings beyond the high or low signal levels normally used by the module.
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-3
When setting the Remote Transmitter Error Up or Down feature in your programming software, set this feature’s bit to 0 to select up. Set the bit to 1 to select down.
For more information on the Remote Fault Alarm, see page 1-5. For more
information on the Local Fault Alarm, see page 1-6.
High Low Error Level
High Low Error level sets the high and low signal levels at which your input modules will indicate a signal fault. This feature works in conjunction with the
Remote Transmitter Error Up or Down.
If the Remote Fault Alarm feature is enabled and a remote fault occurs, the module will detect and report the fault, depending on how the High Low
Error level is configured.
Use your programming software to set the high or low error levels.
Input Filter Cutoff
Eight available input filter settings allow you to choose the best rolloff frequency for input channels on your I/O module. When choosing a filter, remember that time filter selection affects your input signal’s accuracy.
For example, if you choose the highest frequency of 10 Hz (filter 3), signal noise is more likely to affect the reading, but the slowest frequency of 0.5 Hz (filter 7) provides the most accurate signal due to incoming noise filtering.
See Table 2.2 to decide which input filter to use in your FLEX I/O
analog I/O application:
Filter
Frequency
Table 2.2 Input Filter Frequency
7
0.5 Hz
(2 s)
6
1 Hz
(1 s)
5
2 Hz
(500 ms)
4
4 Hz
(250 ms)
3
10 Hz
(100 ms)
2 1
Reserved
0
Choose the best input filter cutoff in your programming software.
Publication 1794-UM063A-EN-P - March 2006
2-4 Configurable FLEX I/O Analog Module Features
Data Format
You must choose a module data format in your user program. Formats 8, 9, 10 and 15 are not used. If they are selected for a channel quad, a configuration fault will occur and will be reported as Diagnostic Data 2. All data for that channel quad will be set to zero (0).
• Formats 5, 12, 13 and 14 are 2’s complement data formats, and will return data in that form.
• 12 Formats are available
• Default format is 0 to 20 mA
• The data format selected interprets input readings and returns them to the PLC
Data
Format
0
1
2
3
4
Table 2.3 1794-IE8H Data Formats
Format
0…20 mA as mA
0…20 mA as %
0…20 mA as unsigned integer
Resolution Input
Range
0.1% of
0…20 mA
Module Data Processing
0…22 mA Datatable = 1000 (input)
0.2% of
0…20 mA
0…22 mA
0…20 mA as
√%
0.19% of
0…20 mA
0.03% of
0…20 mA
0…22 mA
0…20 mA
Datatable = 10000
( input
20
)
Datatable = 10000
√ input
20
IF…Square_Root_Threshold
< 10000
√ input
20
Else…datatable = 0
Datatable = 65535
( input
20
)
2…22 mA Datatable = 1000 (input) 4…20 mA as mA
0.1% of
4…20 mA
Data Table Value
(Interpretation)
0…22000
(0…22.000 mA)
0…11000
(0…110.00%)
Count per mA
1000
500
Error
Steps
With error steps
0…10488
(0…104.88%)
524
0…65535
(0…22 mA)
3276
2000…22000
(2.000…22.000 mA)
1000
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-5
Data
Format
5
Table 2.3 1794-IE8H Data Formats
Format
4…20 mA as %
Resolution Input
Range
0.16% of
4…20 mA
2…22 mA
Module Data Processing
Datatable = 10000
( input-4
16
)
6
7
4…20 mA as
√%
0.17% of
4…20 mA
4…20 mA as unsigned integer
0.03% of
4…20 mA
4…22 mA
4…20 mA
Datatable = 10000
√ input-4
16
IF…Square_Root_Threshold
< 10000
√ input-4
16
Else…datatable = 0
Datatable = 65535
( input-4
16
)
Not Assigned
10
11
8
9
12
0…20 mA as A/D count
4…20 mA as %
0.04% of
0…20 mA
0.16% of
4…20 mA
0…22 mA
3.6…21 mA
Datatable = 55000
( input
22
)
Datatable = 10000
( input-4
16
)
13 4…20mA as %
0.16% of
4…20 mA
3…21 mA
Datatable = 10000
( input-4
16
)
14 4…20 mA as %
0.16% of
4…20 mA
2…22 mA
Datatable = 10000
( input-4
16
)
15 Not Assigned
Data Table Value
(Interpretation)
-1250 … +11250
(2’s complement)
(-12.50% …
+112.50%)
Count per mA
625
0…10607
(0…106.07%)
589
Error
Steps
With error steps
With error steps, underrange not allowed
0…65535
(4…20 mA)
4095 With error steps
0…55000
(0…22 mA)
2500
-250 … +10625
(2’s complement)
(-2.50…
+106.25%)
625
-625 … +10625
(2’s complement)
(-6.25…
+106.25%)
-1250 … +11250
(2’s complement)
(-12.50…
+112.50%)
All fixed
NAMUR
NE 4 all fixed
All fixed
Publication 1794-UM063A-EN-P - March 2006
2-6 Configurable FLEX I/O Analog Module Features
Data Formats and Error Ranges
0 mA
PHYSICAL INPUT SIGNAL RANGE
20 mA
Normal Signal Range Overrange
22 mA
Format 0
Format 1
Format 2
Format 3
0.00 mA
0.00%
0.00%
0
20.00 mA
100.00%
100.00%
65535
Programmable in 20
0.1 mA steps
Remote Fault
22.00 mA
110.00%
104.88%
22 mA
Format 4
Format 5
Format 6
Format 7
0 mA 20 mA
Underrange
Remote Fault
0.00 mA
-25.00%
0 mA
Local fault
2 mA
-12.50%
2 mA
2 mA
Programmable in 20
0.1 mA steps
Normal Signal Range
4.00 mA
0.00%
0.00%
0
Normal Signal Range
20.00 mA
100.00%
100.00%
65535
20 mA
Overrange
Programmable in 20
0.1 mA steps
Overrange
22 mA
Remote Fault
22.00 mA
112.50%
106.07%
22 mA
22 mA
Remote Fault
Format 8
Format 9
Format 10
Format 11 0
Not assigned
Not assigned
Not assigned
50000 55000 55000
Format 12
Format 13
Format 14
Format 15
0 mA
Underrange
Remote Fault
Local fault
-25.00%
-25.00%
-25.00%
-12.50%
-12.50%
-12.50%
-2.50%
-6.25%
-12.50%
Normal Signal range
20 mA
-0.00%
-0.00%
-0.00%
Not assigned
100.00%
100.00%
100.00%
Overrange
106.25%
106.25%
112.50%
22 mA
Remote Fault
112.50%
112.50%
112.50%
Local
Fault
Local
Fault
Local
Fault
Local
Fault
41667
Publication 1794-UM063A-EN-P - March 2006
Select Your 1794-OE8H
FLEX I/O Analog Output
Module’s Operating
Features
Configurable FLEX I/O Analog Module Features 2-7
All features of the 1794-OE8H analog output module are independently configurable in two four-channel groups (channel 0 to 3 and channel 4 to 7).
IMPORTANT
The default selection value for all parameters is 0.
Local Fault Mode
The Local Fault Mode can be programmed to determine how the module responds to communications faults and internal module faults.
When setting the Local Fault Mode feature in your programming software, set this feature’s bit to 0 to use the analog fault state or digital fault state only if a communications fault occurs. Set the bit to 1 to use the Analog Fault state or
Digital Fault state if any fault occurs.
Latch Mode
Latch Mode determines channel operation under wire-off or lead-break fault conditions. This feature controls the operation of two channel groups, channels 0 to 3 and channels 4 to 7. Channel detection occurs on a continuous basis. If a fault is detected, the channel fault alarm is set.
If Latch mode is enabled when a fault occurs, the fault will remain latched in its fault state until a Global Reset (see below) is issued. If Latch mode is disabled when a fault occurs, the channel reports a fault until the fault is corrected. Global Reset is not necessary if Latch mode is disabled.
When using your programming software, set the Latch mode bit to 0 to disable the feature. Set the bit to 1 to enable it.
Global Reset
Global Reset works in conjunction with Latch mode during fault conditions. If
Latch mode is enabled and a fault condition occurs, the channel operating with a fault remains in this condition (with analog or digital fault state implied) until a Global Reset is issued. The Global Reset feature resets all outputs of a particular channel group to accept normal system output data.
The Global Reset feature is an edge triggered signal. Use your programming software to set the Global Reset bit to 1 for normal operation. Resetting of outputs occurs during the 1 to 0 transition.
Publication 1794-UM063A-EN-P - March 2006
2-8 Configurable FLEX I/O Analog Module Features
Analog Digital State
You can configure your FLEX I/O analog output modules to work in an analog mode or digital mode using the Analog Digital State feature. Depending on which state you choose for your application, additional parameters (see the
descriptions of Analog Fault State and Digital Fault State on page 2-8) must be
configured for your module to react to fault conditions.
Set the Analog Digital State bit in your programming software to 0 for your module to operate in an analog state. Set the bit to 1 for your module to operate in a digital state. A selection bit is available to each channel.
Analog Fault State
The Analog Fault State feature determines how your I/O module reacts to faults when a channel is used in analog mode. After a fault condition occurs, the module may got to minimum value, maximum value, hold last state or use analog fault state value.
Use your programming software to set the Analog Fault State bits on the
I/O module for one of the following fault reactions:
• 0 = minimum value
• 1 = maximum value
• 2 = hold last state
• 3 = use analog fault state value
You can set these parameters independently for channels 0 to 1, 2 to 3, 4 to 5, and 6 to 7.
Analog Fault State Value
Specifies the fault state value of the analog output data to the module. Specific format is controlled by the Module Data Format Control parameter. This data is used when the channel is in analog output mode and the analog fault state is configured to use analog fault state value.
Digital Fault State
The Digital Fault State feature determines how your I/O module reacts to faults when a channel is used in digital mode. After a fault condition occurs, the module may reset channel outputs or hold last state of the outputs.
Use your programming software to set the Digital Fault State bit to 0 to reset outputs. Set to 1 to hold last state of the outputs after a fault occurs. This feature is available on a per channel basis.
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-9
Data Format
You must choose a module data format in your user program. See
1794-OE8H Data Formats on page 2-10 for an explanation of each bit. Data
Formats 2, 5, 6, 8, 9, 10, 12 and 15 are not assigned.
When choosing a data format, remember the following:
• If an unassigned Analog Data Format is selected, the module sets
Diagnostic Data to 2 for configuration failure and puts affected channels affected in the corresponding fault state.
• An unconfigured module channel pair can be assumed to have the default configuration Analog Data Format 0, 0 to 20 mA and Analog
Mode Fault State minimum range. If a non-assigned format is selected, then the diagnostic 2 for configuration failure is set and the module channel pair goes to the default fault state minimum range.
• If on the other hand, the configuration had been changed, from the default, and then it was changed again to a non-assigned format, then the diagnostic bit 2 for configuration failure is set and the module goes to the fault state for the last valid configuration.
• Formats 13 and 14 are 2’s complement data formats, and require data to the module in that form.
• Range: 0 to 15
• Default: 0
• Data Table Reference: data format, word 12 and 13, bits 0 to 3, bits 4 to 7
If data is sent to the module which is out of range, the value will be clipped and
Diagnostic Data will be set to 11 data out of range.
Diagnostic Data error
11=data out of range datatable
20.000
16.000
12.000
8.000
4.000
0.000
-4.000
0 4 8 12 16 20 24
Output mA
Diagnostic Data error
11=data out of range
Publication 1794-UM063A-EN-P - March 2006
2-10 Configurable FLEX I/O Analog Module Features
1
2
3
4
8
9
5
6
7
Data
Format
0
Format mA as
0…20 mA
Table 2.4 1794-OE8H Data Formats
Resolution Full
Output
Range
0.1% of
0…20 mA
0…22 mA
Module Data Processing
Output =
( datatable
1000
)
% as
0…20 mA
0.2% of
0…20 mA
0…22 mA
Output = 20
( datatable
10000
)
Unsigned integer as
0…20 mA
0.03% of
0…20 mA mA as
4…20 mA
0.1% of
4…20 mA
0…20 mA
Not Assigned
Output = 20
( datatable
65535
)
2…22 mA
Output =
( datatable
1000
)
4…20 mA —
4…20 mA
Unsigned integer as
4…20 mA
0.03% of
4…20 mA
4…20 mA Not assigned
4…20 mA
4…20 mA
Output = 16
( datatable
65535
)
+ 4
0…65535
(0…22 mA)
3276
2000…22000
(2.000…22.000 mA)
1000
Min=0 mA
Max=20 mA
Hold last=hold
50%=10 mA
Min=2 mA
Max=22 mA
Hold last=hold
50%=12 mA
— — —
0…65535
(4…20 mA)
4095 Min=4 mA
Max=20 mA
Hold last=hold
50%=12 mA
Not Assigned
Data Table Value
(Interpretation)
Count per mA
Analog Fault
State
0…22000
(0…22.000 mA)
1000
0…11000
(0…110.00%)
500
Min=0 mA
Max=22 mA
Hold last=hold
50%=11 mA
Min=0 mA
Max=22 mA
Hold last=hold
50%=11 mA
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-11
Data
Format
10
11
Format
D/A count as 0…20 mA
Resolution Full
Output
Range
Table 2.4 1794-OE8H Data Formats
Module Data Processing
0.28% of
0…20 mA
0…22 mA
Not Assigned
Output = 22
( datatable
8000
)
12
13
14
15
Data Table Value
(Interpretation)
Count per mA
Analog Fault
State
4…20 mA —
% as
4…20 mA
0.16% of
4…20 mA
—
3…21 mA
Not assigned
Output = 16
( datatable
10000
)
+ 4
% as
4…20 mA
0.16% of
4…20 mA
2…22 mA
Output = 16
( datatable
10000
)
+ 4
—
-625 …+10625
(2’s complement)
(-6.25…+106.25
%)
—
625
-1250…+11250
(2’s complement)
(-12.50…+112.5
0%)
625
Not Assigned
0…8000
(0…22 mA)
363 Min=0 mA
Max=22 mA
Hold last=hold
50%=11 mA
—
Min=3 mA
Max=21 mA
Hold last=hold
50%=12 mA
Min=2 mA
Max=22 mA
Hold last=hold
50%=12 mA
Fault Alarm
Fault Alarm selects whether the channel pair fault detection is enabled or disabled. There is a 100 Hz (10 ms) filter for wire off or lead break detection.
Use your programming software to set the Fault Alarm. Set the feature bit to 0 to disable the alarm. Set the bit to 1 to enable wire off/lead break fault detection.
Publication 1794-UM063A-EN-P - March 2006
2-12 Configurable FLEX I/O Analog Module Features
Understand Image Table
Mapping and Bit/Word
Descriptions
Bit Descriptions
Use the table below to understand bits used in image table mapping and bit/word descriptions. Complete definitions of these feature documented below can be found in Chapter 2.
Table 2.5 Bit/Word Descriptions
Bit(s)
Ch
Ovr Alm
Und Alm
Rm Flt
Location
1794-IE8H Input and output maps
1794-OE8H Input and output maps
1794-IE8H Input map
1794-IE8H Input map
1794-IE8H Input map
Lo Flt
Res Flg
1794-IE8H Input map
1794-IE8H Input map
1794-OE8H Input map
1794-IE8H Output map U/D
Flt Md
Cd Flg
1794-IE8H Output map
1794-IE8H Output map
1794-OE8H Output map
1794-OE8H Input map Flt Alm
Glbl Rst
Lo Flt Md
1794-OE8H Output map
1794-OE8H Output map
Alg Flt Ste 1794-OE8H Output map
Lth Rty 1794-OE8H Output map
Dig Flt Ste 1794-OE8H Output map
Alg Dig Md 1794-OE8H Output map
Diagnostic
Status
HRBD
1794-IE8H Input map
1794-OE8H Input map
1794-IE8H Input map
1794-OE8H Input map
HRB
HFAIL
HTMT
HCM
1794-IE8H Input map
1794-OE8H Input map
1794-IE8H Input map
1794-OE8H Input map
1794-IE8H Input map
1794-OE8H Input map
1794-IE8H Input map
1794-OE8H Input map
Definition
Channel
Overrange Alarm
Underrange Alarm
Remote Fault
Local Fault
Response Flag
Up/down
Fault Module
Command Flag
Fault Alarm
Global Reset
Local Fault Module
Analog Fault State
Latch Retry
Digital Fault State
Analog Digital Module
Diagnostic Status
HART Rebuild Flag
HART Readback Flag
HART Failure Flag
HART Transmitter Flag
HART Communication
Flag
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-13
Analog Input Module (1794-IE8H) Image Table Mapping
Table 2.6 Input Map (Read Words)
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
0 Channel 0 Input Data
7
8
5
6
3
4
1
2
9
10
11
12
H
Rb ch
7
H
Tmt ch
7
Ovr
Alm ch
7
Rm
Flt ch
7
H
Rb ch
6
H
Tmt ch
6
Ovr
Alm ch
6
Rm
Flt ch
6
H
Tmt ch
5
H
Rb ch
5
Ovr
Alm ch
5
Rm
Flt ch
5
H
Tmt ch
4
H
Rb ch
4
Ovr
Alm ch
4
Rm
Flt ch
4
Reserved
Ovr
Alm ch
3
Rm
Flt ch
3
H
Rb ch
3
H
Tmt ch
3
H
Rb ch
2
H
Tmt ch
2
Ovr
Alm ch
2
Rm
Flt ch
2
H
Rb ch
1
H
Tmt ch
1
Channel 1 Input Data
Channel 2 Input Data
Channel 3 Input Data
Channel 4 Input Data
Channel 5 Input Data
Channel 6 Input Data
Ovr
Alm ch
1
Channel 7 Input Data
Ovr
Alm ch
0
Und
Alm ch
7
Und
Alm ch
6
Rm
Flt ch
1
Rm
Flt ch
0
Lo
Flt ch
7
H
Rbd
Lo
Flt ch
6
Lo
Flt ch
5
Und
Alm ch
5
Reserved
Lo
Flt ch
4
Und
Alm ch
4
H
Tmt ch
0
H
Rb ch
0
H
Fail ch
7
H
Cm ch
7
H
Fail ch
6
H
Cm ch
6
H
Fail ch
5
H
Cm ch
5
H
Fail ch
4
H
Cm ch
4
H
Fail ch
3
H
Cm ch
3
Lo
Flt ch
3
Und
Alm ch
3
Lo
Flt ch
2
Und
Alm ch
2
Und
Alm ch
1
Lo
Flt ch
1
Diagnostic Status
Und
Alm ch
0
Lo
Flt ch
0
H
Fail ch
2
H
Cm ch
2
H
Fail ch
1
H
Cm ch
1
H
Fail ch
0
H
Cm ch
0
Where: ch = channel
Ovr Alm = Over Range Alarm
Und Alm = Under Range Alarm
Rm Flt = Remote Fault
Lo Flt = Local Fault
H Rbd = HART Rebuild
H Rb = HART Readback
H Fail = HART Failure
H Tmt = HART Transmitter
H Cm = HART Communication
Publication 1794-UM063A-EN-P - March 2006
2-14 Configurable FLEX I/O Analog Module Features
Table 2.7 Configuration Map (Write Words)
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
Write
0 Reserved High and Low Error Level 0…3 U/D
0…3
Filter Cutoff 0…3 Data Format 0…3 Flt
Md
0…3
1 Sqrt High and Low Error Level 4…7 U/D
4…7
Filter Cutoff 4…7 Data Format 4…7 Flt
Md
4…7
Where: U/D = up/down
Flt Md = Fault Module
Sqrt = Square Root
Bit/Word Description for the Analog Input Module
(1794-IE8H)
Table 2.8 Fault Mode - Write Words 0 and 1
Word 0 Bit 00 Fault enable for channels 0…3
Word 1 Bit 00 Fault enable for channels 4…7
Where: 0 = disabled
1 = enable with wire-off and overload or short circuit
Table 2.9 Add-on Filter Selections - Write Words 0 and 1
Word Bits
0
Description
07 06 05 Channels 0…3
1 07 06 05 Channels 4…7
0 0 0 Reserved - Module will not operate with
0 0 1 these settings.
0 1 0
0 1 1 10 Hz (100 ms)
1 0 0 4 Hz (250 ms)
1 0 1 2 Hz (500 ms)
1 1 0 1 Hz (1 s)
1 1 1 0.5 Hz (2 s)
Table 2.10 Remote Transmitter Error Up/Down - Write Words 0 and 1
Word 0 Bit 08 Up/down channels 0…3
Word 1 Bit 08 Up/down channels 4…7
Where: 0 = remote fault is enabled by transmitter overrange
1 = remote fault is enabled by transmitter underrange
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-15
Table 2.11 Data Format - Write Words 0 and 1
Bits Description
Word 0 04 03 02 01 Data format for channels 0…3
Word 1 04 03 02 01 Data format for channels 4…7
0 0 0 0 0…22 mA, with error steps (default)
0 0 0 1 0…22 mA = 0…110%, with error steps
0 0 1 0 0…22 mA = 0…104.8%, square root, with error steps
0 0 1 1 0…22 mA = 0…65,535, unsigned integer, with error steps
0 1 0 0 2…22 mA, w/error steps
0 1 0 1 2…22 mA = -12.5…112.5%, with error steps
0 1 1 0 4…22 mA = 0…106%, square root, with error steps
0 1 1 1 4…20 mA = 0…65,535, unsigned integer, with error steps
1 0 0 0 Not assigned
1 0 0 1 Not assigned
1 0 1 0 Not assigned
1 0 1 1 0…22 mA = A/D count, with fixed error
1 1 0 0 3.6…21 mA = NAMUR NE 43, with fixed error
1 1 0 1 3…21 mA = -6.25…106.28% with fixed error
1 1 1 0 2…22 mA = -12.5…112.5% with fixed error
1 1 1 1 Not assigned
Table 2.12 Error Level 0.1mA Steps
Word 0
Word 1
Data Format
2…22mA
-12.5…112.5%
Bits Description
13 12 11 10 9 Error level channels 0…3
13 12 11 10 9 Error level channels 4…7
0 0 0 0 0 Disabled
0.1mA * step value = remote fault alarm threshold
Examples
0 0 1 1 1 Step value = 7, 0.1 mA * 7 = 0.7 mA
Remote fault alarm at -4.38% or +104.38%
0 1 1 1 1 Binary value = 15, 0.1 mA * 15 = 1.5 mA
Remote fault alarm at -9.38% or + 109.38%
Publication 1794-UM063A-EN-P - March 2006
2-16 Configurable FLEX I/O Analog Module Features
Analog Output Module (1794-OE8H) Image Table Mapping
Table 2.13 Input Map (Read Words)
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
0 Reserved Diagnostic Status Flt
Alm ch7
Flt
Alm ch6
Flt
Alm ch5
Flt
Alm ch4
Flt
Alm ch3
Flt
Alm ch2
Flt
Alm ch1
Flt
Alm ch0
1
2
3
H
Rb ch 7
H
Tmt ch 7
H
Rb ch 6
H
Tmt ch 6
Where: ch = channel
Flt Alm = Fault Alarm
H Rbd = HART Rebuild
H RB = HART Readback
H Fail = HART Failure
H Tmt = HART Transmitter
H Cm = HART Communication
H
Rb ch 5
H
Tmt ch 5
H
Rb ch 4
H
Tmt ch 4
H
Rb ch 3
H
Tmt ch 3
H
Rb ch 2
H
Tmt ch 2
H
Rb ch 1
H
Tmt ch 1
Reserved
H
Rb ch 0
H
Fail ch 7
H
Tmt ch 0
H
Cm ch 7
H
Fail ch 6
H
Cm ch 6
H
Fail ch 5
H
Cm ch 5
H
Fail ch 4
H
Cm ch 4
H
Fail ch 3
H
Cm ch 3
H
Fail ch 2
H
Cm ch 2
H
Fail ch 1
H
Cm ch 1
H
Fail ch 0
H
Cm ch 0
Table 2.14 Output Map (Write Words)
Bit
→
Word
0
↓
3
4
1
2
7
8
5
6
Where: ch = channel
Dig Out = Digital Output
Glbl Rst = Global Reset
15 14 13 12 11 10 09 08 07
Reserved Glbl
Rst
Reserved
06
Dig
Out ch 7
Dig
Out ch 6
Channel 0 Output Data
Channel 1 Output Data
Channel 2 Output Data
Channel 3 Output Data
Channel 4 Output Data
Channel 5 Output Data
Channel 6 Output Data
Channel 7 Output Data
05
Dig
Out ch 5
04 03
Dig
Out ch 4
Dig
Out ch 3
02 01
Dig
Out ch 2
Dig
Out ch 1
00
Dig
Out ch 0
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-17
7
8
5
6
9
10
Table 2.15 Configuration Map (Write Words)
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
0 Lo Flt
Md
Rese rved
Flt
Md ch
2…3
Flt
Md ch
0…1
Alg Flt
Ste ch
2…3
Alg Flt
Ste ch
0…1
Data Format ch 2…3
Data Format ch 0…1
1 Lth
Md ch
4…7
Lth
Md ch
0…3
Flt
Md ch
6…7
Flt
Md ch
4…5
Alg Flt
Ste ch
6…7
Alg Flt
Ste ch
4…5
Data Format ch 6…7
Data Format ch 4…5
2 Dig
Flt
Ste ch 7
Dig
Flt
Ste ch 6
Dig
Flt
Ste ch 5
Dig
Flt
Ste ch 4
Dig
Flt
Ste ch 3
Dig
Flt
Ste ch 2
Dig
Flt
Ste ch 1
Dig
Flt
Ste ch 0
Alg
Dig
Md ch 7
Alg
Dig
Md ch 6
Alg
Dig
Md ch 5
Alg
Dig
Md ch 4
Alg
Dig
Md ch 3
Alg
Dig
Md ch 2
Alg
Dig
Md ch 1
Alg
Dig
Md ch 0
3
4
Analog Fault State Value Channel 0
Analog Fault State Value Channel 1
Analog Fault State Value Channel 2
Analog Fault State Value Channel 3
Analog Fault State Value Channel 4
Analog Fault State Value Channel 5
Analog Fault State Value Channel 6
Analog Fault State Value Channel 7
Where: ch = channel
Lo Flt Md = Local Fault Mode
Flt Md = Fault Mode
Alg Flt Ste = Analog Fault State
Lth Md = Latch Mode
Dig Flt Ste = Digital Fault State
Alg Dig Md = Analog/Digital Mode
Cd Flg = Command Flag
Publication 1794-UM063A-EN-P - March 2006
2-18 Configurable FLEX I/O Analog Module Features
Table 2.16 Data Format Control
Data
Format
0 0 0 0
Range
0…20mA
Resolution Full
Range
0.1% of
0…20 mA
Interpretation
0…22 mA 0…22 mA
Data Table
Value
0…2000
0 0 0 1 0.2% of
0…20 mA
0-110%
Count per mA
1000
0…11000 500
0
0
0
0
1
1
0
1 0.03% of
0…20 mA
0 1 0 0 4…20 mA 0.1% of
4…20 mA
0 1 0 1
0 1 1 0
0 1 1 1 4…20 mA 0.03% of
4…20 mA
Not Assigned
0…20 mA Unsigned integer
2…22 mA 2…22 mA
Not Assigned
4…20 mA Unsigned integer
Not Assigned
0…65535
2000…
22000
0…65535
3276
1000
4095
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1 4…20 mA 0.28% of
0…20 mA
1 1 0 0
0…22 mA D/A count 0…8000 363
1
1
1
1
1
1
0
1
1
1
0
1
4…20mA 0.16% of
4…20 mA
Not Assigned
3…21 mA -6.25…
+106.25%
2…22 mA -12.5…
+112.5%
Not Assigned
-625…
+10625
-1250…
+11250
625
625
Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-19
1794-IE8H and -OE8H
Extended Configuration
Data Table
The FLEX I/O HART modules are addressed by using an MSG or CIO instruction. When using one of these instructions, configure it to the following.
• Class: 0x7D
• Instance: Slot number (range from 1 to 8 with 1 being the I/O module closest to the adapter
• Attribute: 0x66
• Service: 0x0E for a get attribute single or 0x10 for a set attribute single
Also, configure the communication path to the target I/O module.
For a set attribute single, configure two words as defined in the Extended
Configuration Data Table to be sent to the I/O module.
For a get attribute single, two words configured as defined in the Extended
Configuration Data Table will be returned from the instruction.
Table 2.17 1794-IE8H and -OE8H Extended Configuration Data Table
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
0 PMI ch 7
PMI ch 6
PMI ch 5
PMI ch 4
PMI ch 3
PMI ch 2
PMI ch 1
PMI ch 0
SME ch 7
SME ch 6
SME ch 5
SME ch 4
SME ch 3
SME ch 2
SME ch 1
SME ch 0
1 Reserved HART Read Back Threshold ch 4…7
HS
LED
HS
Inht
50/
60 Hz
HART Read Back Threshold ch 0…3
Where: ch = channel
PMI = Primary Master Inhibit
SME = Secondary Master Enable
HS LED = HART Status LEDs
HS Inht = HART Status Inhibit
Publication 1794-UM063A-EN-P - March 2006
2-20 Configurable FLEX I/O Analog Module Features
Secondary Master Enable (SME) and Primary Master Inhibit (PMI)
These two bits control a few module internal functions individually for channels 0 to 7.
Table 2.18 SME and PMI Values
PMI
SME
Bits
(1)
8, 9, 10, 11, 12,
13, 14, 15
0, 1, 2, 3, 4, 5, 6, 7
Rebuild
HART Read Back
1 (Default)
0
0
HART Smooth Filter Pulsed
On
On
2
0
1
On
On
On
Primary Master
Secondary Master
On
Off
On
On
1 Where:
Ch0 - bits 0 and 8; Ch1 - bits 1 and 9; Ch2 - bits 2 and 10; Ch3 - bits 3 and 11;
Ch4 - bits 4 and 12; Ch5 - bits 5 and 13; Ch6 - bits 6 and 14; Ch7 - bits 7 and 15
3
1
0
Off
Off
Off
Off
Off
4
1
1
On
Off
Off
Off
On
HART Status Indicators
When this bit is set, the indicators are used for HART diagnostics. indicator behavior changes to show communication on HART with each indicator representing a HART loop. A flashing yellow indicator means that communication is currently being processed while a solid yellow indicator means that this device is in the transmitter list.
HART Status Inhibit
When this bit is set, the HART communication status is not shown in the realtime data table to enable compatibility. The appropriate areas are cleared with zeroes.
50 or 60 Hz Filter
The values are:
• 0 = 50 Hz (default)
• 1 = 60 Hz
Publication 1794-UM063A-EN-P - March 2006
Chapter Summary
Configurable FLEX I/O Analog Module Features 2-21
HART Read Back Threshold
This bit delivers the percentage value, in steps of 1%, of the threshold for forcing the HART read back indication. The maximum input signal deviation for HART analog modules is 31%.
If there is no HART transmitter on the loop or if the loop is not in the transmitter list, the function is switched off internally in the I/O module.
The values are:
• 0 = disable indicator (default)
• 1 to 4 = not supported from the I/O module (set to 5 internally)
• 5 to 31 = percentage threshold data (5 to 31%)
In this chapter, we told you about the FLEX I/O system and the analog I/O modules, and how they communicate with programmable controllers. Move to
Chapter 3 to learn how to install your FLEX I/O analog module.
Publication 1794-UM063A-EN-P - March 2006
2-22 Configurable FLEX I/O Analog Module Features
Notes:
Publication 1794-UM063A-EN-P - March 2006

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