Error Detection In Standard Mode - Siemens SIMATIC ET 200S Operating Instructions Manual

4.6.8

Error Detection in Standard Mode

Description
The absolute value encoder and sensor supply short circuit errors must be acknowledged.
They have been detected by the 1SSl and are indicated at the feedback interface. A
channel-specific diagnosis is carried out after you have enabled group diagnosis at
parameter assignment (see the ET 200S Distributed I/O System manual).
The parameter assignment error bit is acknowledged by means of correct parameter
assignment.
Figure 4-4
In the case of constant error acknowledgement (EXTF_ACK = 1) or in CPU/master STOP
mode, the 1SSI reports the errors as soon as they are detected and clears the errors as
soon as they are eliminated.
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05
Error Acknowledgment
1SSI
4.6 Functions of the 1SSI
239