Siemens Simatic 6ES7 157-0AD81-0 A0 Series User Manual

Diagnostics Using the User Program
10-8
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
10.2.3 Module status
The module status is part of the station diagnosis and indicates the status of the
configured modules.
Structure of the module status
The module status consists of 63 bytes.
In the module status, the status is encoded by means of two bits for each slot (see
Section 10.2.2).
The following applies to the entry in the module status:
 If an underlying slave delivers its own module status in its diagnosis, this status
is copied to the appropriate location.
 If an underlying slave delivers a module diagnosis but not the module status,
the status 01B ”Module fault” is entered for a faulty identifier.
 If an underlying slave delivers neither its own module status nor a module
diagnosis, the status is entered as follows:
– For error-free operation: 00
B
”Module OK”
– For configuration error: 10
B
”Incorrect module”
– For missing slave: 11
B
”No module”
– For all other errors (e.g. “Prm_Fault”): 01
B
”Module faulty”

Siemens Simatic 6ES7 157-0AD81-0 A0 Series Specifications

General

Brand	Siemens
Model	Simatic 6ES7 157-0AD81-0 A0 Series
Category	Industrial Equipment
Language	English