Siemens simatic et 200s Operating Instructions Manual page 118

1PosInc/Analog
4.2 Brief Instructions on Commissioning the 1PosInc/Analog
Test
Start inching mode, and monitor the associated feedback.
1. Use "Monitor/Modify Variables" to check the actual value and the status bits POS_ACK,
POS_ERR, POS_DONE, ERR_ENCODER.
2. Select the "Block" folder in your project. Choose the "Insert > S7 Block > Variable Table
menu command to insert the VAT 1 variable table, and then confirm with OK.
3. Open the VAT 1 variable table, and enter the following variables in the "Address" column:
4. Choose "PLC > File Connect To > Configured CPU" to switch to online.
5. Choose "Variable > Monitor" to switch to monitoring.
6. Switch the CPU to RUN mode.
Result
The following table shows you which activity triggers which result.
Activity
Switch the CPU to RUN mode.
Check the encoder wiring
Check the feedback bit ERR_ENCODER
Inching in the plus direction:
Start inching mode in the plus direction by setting memory
marker 30.0 ("Variable > Modify >")
118
– MD12 (actual value)
– M8.0 (POS_ACK)
– M8.1 (POS_ERR)
– M8.2 (POS_DONE)
– M8.7 (ERR_ENCODER)
– M30.0 (inching in plus direction)
– M30.1 (inching in minus direction)
– MW32 (speed for inching mode; as S7 analog value 0-7EFFH)
Result
The POS_ACK status bit is deleted
•
The POS_ERR status bit is deleted
•
The POS_DONE status bit is set
•
If ERR_ENCODER = 1, correct the wiring of the encoder
•
The status bit POS_ERR = 0, the UP LED lights up
The POS_ACK status bit is set
•
The POS_DONE status bit is deleted
•
The actual value is continuously updated
•
The POS LED lights up
•
The reversal of the direction of rotation you have
•
parameterized and the wiring of the encoder and drive
are correct
The status bit POS_ERR = 1, the DN LED lights up
Check the assigned parameter reversal of the direction of
rotation and directional adjustment, and the wiring of the
encoder and drive
Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning