Displaying Current Values (Job 15) - Siemens simatic et 200s Operating Instructions Manual

3.6.16

Displaying Current Values (JOB 15)

Definition
You can display the following values in the feedback interface as feedback values:
● Residual distance
● Actual speed
● Causes of errors for POS_ERR and JOB_ERR
The residual distance is set by the 1PosInc/Digital as the default for the feedback value.
The 1PosInc/Analog continuously displays the actual value in the feedback interface
irrespective of the selected feedback value.
Supply the control interface with the desired feedback value and activate JOB 15.
The selected feedback value remains valid until the parameter assignment of the
1PosInc/Digital is changed.
Displaying Current Values and the Latch Function
If you activate the latch function, the 1PosInc/Digital sets a feedback value of 0 and displays
the actual value at the edge at the DI2 digital input.
You can only activate JOB 15 again after the latch function has terminated.
Residual distance
The 1PosInc/Digital calculates the distance to the destination as the residual distance in the
absolute positioning and relative positioning MODEs. As long as the actual value is before
the destination, the residual distance remains positive. It becomes negative once the
destination is overshot. The residual distance is 0 in the other MODEs.
The 1PosInc/Analog displays the residual distance with a sign between -8 388 608 and 8
388 607 increments. Negative values are displayed in twos complement. If the actual
residual distance is beyond these limits, the limit value is displayed.
Actual speed
The 1PosInc/Digital calculates the actual speed as an encoder value change in increments
per 10 ms. It displays these between 0 and 16 777 215.
Causes of errors for POS_ERR and JOB_ERR
The 1PosInc/Digital displays the causes of errors for POS_ERR and JOB_ERR as well as
the MODE and JOB entered in the control interface.
Effect on the MODEs
MODEs are not affected by JOB 15.
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
1PosInc/Digital
3.6 Functions of the 1PosInc/Digital
97