Error Detection/Diagnostics - Siemens simatic et 200s Operating Instructions Manual

4.6.21

Error Detection/Diagnostics

Parameter assignment error
Parameter assignment error
Causes:
The 1PosInc/Analog cannot identify existing
•
parameters as its own.
The slot of the 1PosInc/Analog you have configured
•
does not match the setup.
What to Do:
Check the configuration and setup
•
External Errors
Short circuit of the sensor supply
Causes:
Short circuit of the encoder supply made available at
•
terminals 2 and 10
What to Do:
Check the wiring and correct the short circuit.
•
Acknowledge the error with the EXTF_ACK control
•
bit.
Wire Break/Short Circuit of the Encoder Signals
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.
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
Response of the 1PosInc/Analog
The 1PosInc/Analog is not assigned parameters and cannot
•
execute its functions.
Generate channel-specific diagnostics
•
Response of the 1PosInc/Analog
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.
– Analog output QV+ is set to 0 V
– Digital output OUT:
If the direction is assigned parameters for the DO
function, the digital output OUT=0 is set
– 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.
•
Response of the 1PosInc/Analog
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.
– Analog output QV+ is set to 0 V
– Digital output:
if the direction is assigned parameters with the DO
function, the digital output OUT=0 is set
– 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.
•
1PosInc/Analog
4.6 Functions of the 1PosInc/Analog
171