1PosInc/Digital
3.6 Functions of the 1PosInc/Digital
ET 200S Positioning
100 Operating Instructions, 05/2007, A5E00124871-04
Load Voltage 2L+ Missing Response of the 1PosInc/Digital
Wire Break/Short Circuit of the Encoder Signals Response of the 1PosInc/Digital
Prerequisite:
• You must enable the encoder signal diagnostics
parameter in order to allow error recognition for the
signals A, /A and B, /B.
• You must enable the zero marker diagnostics
parameter in order to allow error recognition for the
signals N, /N. If you use an encoder without a zero
mark, switch off error detection.
Causes:
• Wire break or short circuit of the encoder signals at
terminals 1, 5 or 3, 7 or 4, 8.
What to Do:
• Check the wiring and correct the short circuit.
• Acknowledge the error with the EXTF_ACK control
bit.
• The current reference point run, relative positioning, and
absolute positioning modes are stopped; it is not possible to
start a new run in these modes.
– All 3 digital outputs are set to 0.
– Feedback bit POS_ERR = 1
– Feedback bit POS_DONE = 0
• Feedback bit ERR_ENCODER = 1
• Feedback bit SYNC = 0
• Generate channel-specific diagnostics
• Waits for error acknowledgment EXTF_ACK
• Inching MODE is not affected by this error.
• The current JOB (reference signal evaluation) is canceled.
Errors in the Control of MODEs and JOBs
POS_ERR Response of the 1PosInc/Digital
Causes:
• Certain requirements or conditions have not been
met at the start of a MODE
• The MODE started is not executed.
• The current run is stopped.
– All 3 digital outputs are set to 0.
– Feedback bit POS_ERR = 1
– Feedback bit POS_DONE = 0
JOB_ERR Response of the 1PosInc/Digital
Causes:
• Certain requirements or conditions have not been
met at the activation of a JOB
• The activated JOB is not executed.
– Feedback bit JOB_ERR = 1
Generating a Channel-Specific Diagnostics
In the event of a parameter assignment error, the absence of 2L+ load voltage, a short circuit
of the sensor supply or a wire break/short circuit of the encoder signals, the 1PosInc/Digital
generates a channel-specific diagnostics on the connected CPU/master. To do this, you
must enable the Group Diagnostics parameter (see the
Distributed I/O Device
manual).
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