Discrete Input/Output Modules
Diagnostics of the Modules
Step
1
2
Action
Access the module's debugging screen.
Click the module reference in the channel zone and select the Fault command.
Result : The detected error list appears.
Remark: You cannot access the module diagnostics screen if any of these errors are detected:.
• configuration
• major breakdown
• module missing
The following message then appears on the screen: The module is not present, or is different from the one configured in this position.
How to Access the Channel Diagnostics Function of a
Discrete Module
At a Glance
The Channel diagnostics function displays current errors and where they exist.
Errors are classified according to their category:
• Internal events :
◦ inoperative channel
• External events:
◦ link or sensor supply fault
• Other events:
◦ terminal block incorrectly wired
◦ configuration error
◦ communication interruption
A channel error appears in the Debug tab when the
Error column, turns red.
LED, located in the
Procedure
The following table shows the procedure for accessing the Channel error screen.
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Diagnostics of the Modules
Discrete Input/Output Modules
Step
1
2
Action
Access the module's debugging screen.
Click on the button channel.
situated in the
Result : The list of channel errors appears.
Error column of the inoperative
Note: Channel diagnostics information can also be accessed by program using the
READ_STS instruction.
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Discrete Input/Output Modules
Appendices
What’s in This Part
Topological/State RAM Addressing of the Modules ......................................... 313
Overview
These appendices contain information that should be useful for programming the application.
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