04.96 12 Functional Descriptions
12.28.8 Overview of function identifiers and configuring parameters (DB 2, DR 2 ... DR 6)
IKA output quantity value:
Important: The IKA No. selected in the servo trace screen must be larger by 1 than the
desired IKA No (applies for SW 5.1 and 5.2).
If the output quantity is a position, the following applies:
Formula for servo trace RW=MW*EF [mm]
Formula for high-speed data channel: RW=MW*EF/2 [mm]
If the output quantity is an R parameter, the following applies:
Formula for servo trace RW=MW
Formula for high-speed data channel: RW=MW/2
Absolute compensation value (IKA + TK):
Caution: A relevant value is generated only if "Axis compensation value" has been selected
in the IKA configuration screen under "Type output quantity".
Formula for servo trace RW=MW [Dimension as indicated]
Formula for high-speed data channel: RW=MW*LF [mm]
Current compensation point: SINUMERIK 840C T/M
Formula for servo trace RW=MW
Formula for high-speed data channel: RW=MW/2
The output compensation point is the smaller one of the two including the current position.
IKA table input A:
Formula for servo trace RW=MW*LF [mm]
Formula for high-speed data channel: RW=MW*LF*2 [mm]
Axis setpoint value:
Formula for servo trace RW=MW*2*EF/LF [mm] The value is incorrectly
converted internally.
ERROR!!!
Example: EF=10E-3mm LF=0.5*10E-4mm
setpoint value = 20 mm,
value in servo trace = 2mm!!!
Formula for high-speed data channel: RW=MW*EF/2 [mm]
Number of predecoded blocks:
Formula for servo trace RW=MW
Formula for high-speed data channel: RW=MW
CPU utilization:
Formula for servo trace RW=MW [Dimension as indicated]
Formula for high-speed data channel: RW=MW/2 [%]
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
12–297
SINUMERIK 840C (IA)
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