Error Detection In Standard Mode; Error Detection In Fast 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. Channel-
specific diagnostics are performed if you have enabled group diagnostics in your
configuration (see device manual of the interface module used).
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.
4.6.9

Error Detection in Fast Mode

Description
The absolute value encoder and sensor supply short circuit errors have been detected by the
1SSl and are indicated at the feedback interface. Channel-specific diagnostics are performed
if you have enabled group diagnostics in your configuration (see device manual of the
interface module used).
The parameter assignment error bit is acknowledged by means of correct parameter
assignment.
As soon as the absolute value encoder and sensor supply short circuit errors are no longer
detected by the 1SSl, the error display at the feedback interface is cleared, and in certain
cases the channel-specific diagnosis reports an error-free condition.
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
Error Acknowledgment
1SSI
4.6 Functions of the 1SSI
249