Siemens SIMATIC ET 200AL Equipment Manual - Page 41

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Siemens SIMATIC ET 200AL Equipment Manual
Interrupts, error messages, diagnostics and system alarms
5.3 Alarms
5.3.8

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
40
Structure of channel diagnostics
IM 157-1 DP (6ES7157-1AA00-0AB0)
Equipment Manual, 08/2021, A5E32100641-AE