Interrupts, error messages, diagnostics and system alarms
5.3 Alarms
Interface module IM 157-1 DP (6ES7157-1AA00-0AB0)
Manual, 12/2016, A5E32100641-AD
41
Channel diagnostics
Function
Channel diagnostics provides information about channel errors in modules and details of the
identifier-related diagnostics. Channel diagnostics begins after the module status. Channel
diagnostics does not affect the module status.
The figure below shows how the channel diagnostics for the ET 200AL distributed I/O
system is structured with the IM 157-1 DP interface module.
Figure 5-14 Structure of channel diagnostics
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