1PosSSI/Digital
5.6 Functions of the 1PosSSI/Digital
ET 200S Positioning
230 Operating Instructions, 05/2007, A5E00124871-04
Error Acknowledgment EXTF_ACK
You must acknowledge the corrected errors (load voltage missing, short circuit of the sensor
supply and open circuit/short circuit of the sensor signals).
What You Do Response of the 1PosSSI/Digital
Feedback bit ERR_2L+ = 1
and/or
feedback bit ERR_ENCODER=1
Your control program detects the set feedback bit ERR_2L+
or ERR_ENCODER.
Execute your application-specific error response.
Eliminate the cause of the error.
Switch the EXTF_ACK control bit from 0 to 1 The 1PosSSI/Digital sets the feedback bits ERR_2L+ = 0
and ERR_ENCODER = 0.
This tells you that the cause has been eliminated and
acknowledged.
If ERR_2L+ = 1 and/or ERR_ENCODER = 1, the cause of
the error is not yet eliminated.
Switch the EXTF_ACK control bit from 1 to 0
In the case of constant error acknowledgment (EXTF_ACK=1) or at CPU/Master Stop, the 1PosSSI/Digital reports the
errors as soon as they are detected and deletes them as soon as they have been eliminated.
Parameters
Parameters Meaning Value range Default setting
Enables
Group diagnostics When group diagnostics is enabled, an
encoder error (ERR_ENCODER), no load
voltage (ERR_2L+) or a parameter
assignment error will result in a channel-
specific diagnostics.
• Disable
• Enable
Disable
Encoder signal
diagnostics
Encoder signals D, /D and C, /C are
monitored for short circuit and wire break.
• On
• Off
On
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