Siemens SIMATIC S5 ET 200U - 4.3 Diagnosing Faults for ET 200 U(DP Siemens)

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ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
4.3 Diagnosing Faults for ET 200U(DP Siemens)
This section describes three alternatives for diagnosing faults:
 Using LEDs to diagnose problems ( Section 4.3.1)
 Using COM ET 200 to diagnose problems( Section 4.3.2)
 Diagnosing faults with STEP 5 ( Section 4.3.3)
Diagnosing faults with COM ET 200 in a STEP 5 program is described in
detail in the “ET 200 Distributed I/O System” Manual.
In this Section
ET 200U(DP Siemens): AddressAssignment,Starting–Up,Diagnosing Faults Using COMET200