TM3 Analog I/O Modules Diagnostic
Analog I/O Modules Diagnostics
The operating status of each I/O channel is given by the diagnostic bytes in the I/O Mapping tab:
oIBStatusIWx for input channel x
oIBStatusQWx for output channel x
NOTE: If the Status Enabled parameter in the I/O Configuration tab is deactivated, it is possible to update the value of the diagnostic bytes by calling the TM3_GetModuleInternalStatus function.
For more information about TM3_GetModuleInternalStatus function:
oRefer to M241 Controller PLCSystem Library Guide for Modicon M241 Logic Controller.
oRefer to M251 Controller PLCSystem Library Guide for Modicon M251 Logic Controller.
oRefer to M262 Controller System Library Guide for Modicon M262 Logic/Motion Controller.
Input Diagnostic Byte Description
This table describes the IBStatusIWx diagnostic byte:
|
Byte value |
Description |
|---|---|
|
0 |
Normal |
|
1 |
Undefined |
|
2 |
Undefined |
|
3 |
Configuration error detected. |
|
4 |
External power supply error detected. |
|
5 |
Wiring error detected (input voltage/current high limit exceeded). |
|
6 |
Wiring error detected (input voltage/current low limit exceeded). |
|
7 |
Hardware error detected. |
|
8 |
The measured value is in the High extended zone. |
|
9 |
The measured value is in the Low extended zone. |
|
10...255 |
Undefined |
Output Diagnostic Byte Description
This table describes the IBStatusQWx diagnostic byte:
|
Byte value |
Description |
|---|---|
|
0 |
Normal |
|
1 |
Undefined |
|
2 |
Undefined |
|
3 |
Configuration error detected |
|
4 |
External power supply voltage limits exceeded |
|
5 |
Undefined |
|
6 |
Undefined |
|
7 |
Hardware error detected |
|
8...255 |
Undefined |
Status Byte Values Produced By Channel Input Types
The following tables shows the Input Channel Status Byte values generated by different channel input types of the TM3 Analog expansion modules.
0...10 V channel input type:
|
Input voltage |
Status Code Generated |
|---|---|
|
≤ -0.20 V |
6 |
|
-0.19 V...10.19 V |
0 |
|
≥ 10.20 V |
5 |
-10...+10 V input channel type:
|
Input voltage |
Status Code Generated |
|---|---|
|
≤ -10.40 V |
6 |
|
-10.39 V...10.39 V |
0 |
|
≥ 10.40 V |
5 |
0...20 mA input channel type:
|
Input voltage |
Status Code Generated |
|---|---|
|
≤ -0.40 mA |
6 |
|
-0.39 mA...20.39 mA |
0 |
|
≥ 20.40 mA |
5 |
4...20 mA input channel type:
|
Input voltage |
Status Code Generated |
|---|---|
|
≤ 3.68 mA |
6 |
|
3.69 mA...20.31 mA |
0 |
|
≥ 20.32 mA |
5 |
0...20 mA extended mode of the TM3AI8 / TM3AI8G expansion modules:
|
Input voltage |
Status Code Generated |
|---|---|
|
≤ -0.40 mA |
6 |
|
-0.39 mA...20.00 mA |
0 |
|
20.01 mA...23.54 mA |
8 |
|
≥ 23.55 mA |
5 |
4...20 mA extended mode of the TM3AI8 / TM3AI8G expansion modules:
|
Input voltage |
Status Code Generated |
|---|---|
|
< 1.19 mA |
6 |
|
1.20 mA...3.99 mA |
9 |
|
4.00 mA...20.00 mA |
0 |
|
20.01 mA...23.17 mA |
8 |
|
≥ 23.18 mA |
5 |
