Siemens simatic et 200s Operating Instructions Manual page 101

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
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
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 1PosInc/Digital reports the
errors as soon as they are detected and deletes them as soon as they have been eliminated.
Parameters
Parameters
Enables
Group diagnostics
Encoder signal
diagnostics
Zero marker diagnostics
Feedback Messages
Address
Byte 0
Byte 4
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
Meaning
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.
Encoder signals A, /A and B, /B are monitored for
short circuit and wire break.
Zero marker signals N, /N are monitored for short
circuit and wire break.
Assignment
Bit 7: ERR_ENCODER
Bit 3: SYNC
Bit 2: POS_ DONE
Bit 1: POS_ERR
Bit 0: POS_ACK
Bit 7: ERR_2L+
Bit 1: JOB_ERR
Bit 0: JOB_ACK
3.6 Functions of the 1PosInc/Digital
Response of the 1PosInc/Digital
Feedback bit ERR_2L+ = 1and/or feedback bit
ERR_ENCODER=1
The 1PosInc/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+ is still 1 and/or ERR_ENCODER = 1, the cause
of the error is not yet eliminated.
Value range
•
•
•
•
•
•
1PosInc/Digital
Default setting
Disable
Disable
Enable
On
On
Off
On
On
Off
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