Siemens SIMATIC ET 200S - 2 DI 120 VAC Standard digital electronic module (6 ES7 131-4 EB00-0 AB0)

1PosUniversal/Digital
7.6 Functions of the 1PosU
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
361
External Errors
Load Voltage 2L+ Missing Response of the 1PosU
Causes:
• Load voltage 2L+ not present or too low at
terminal 7
What to Do:
• Check the wiring and correct the short circuit.
• Acknowledge the error with the EXTF_ACK control
bit.
• The current run is halted; it is not possible to start a new run.
– All 3 digital outputs are set to 0.
– Feedback bit POS_ERR = 1
– Feedback bit POS_DONE = 0
• Feedback bit ERR_2L+ = 1
• Generate channel-specific diagnostics
• Waits for error acknowledgment EXTF_ACK
Short circuit of the sensor supply Response of the 1PosU
Causes:
• Short circuit of the encoder supply made available at
terminals 6 and 10
What to Do:
• Check the wiring and correct the short circuit.
• Acknowledge the error with the EXTF_ACK control
bit.
• The current MODEs relative positioning and absolute
positioning 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.