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Description of Functions
External Block
see Chapter 10
Change
Set Actual Value
see Chapter 10 and Section 9.3.6
On-the-fly
Measurement
see Section 9.3.10
Reference Point
see Section 9.2.3
Switch for
Reference Point
Approach
Reversal Switch
see Section 9.2.3
For Reference
Point approach
9.8.2
Function Description Digital outputs (Job No. 15)
The following checkback signals: position reached, stop (PEH), axis move-
Output of PEH,
FR+, FR–, SFG
ment forward (FR+), axis movement in reverse (FR–), and enable Start
(SFG), are additionally output via digital outputs. The output assignment is
parameterized by way of MD35.
Output of Change
The change M-function (AMF) checkback signal for the M functions M97
M97 or M98
and M98 is output as a digital output. It allows these M functions (switching
signals) to be applied without being delayed by the user cycle time.
Direct Output
Outputs Q0...Q3 (D_OUT1...D_OUT4), which are defined in MD35 as "di-
rect output", can be used directly by the user program (job no. 15) and can
also be controlled by the FM 453.
Since the same memory is used in the user DB for job 15 and job 101, the
jobs cannot be used simultaneously in the cycle.
Note
The outputs are subject to deactivation on module errors of error classes with
the response "Everything Off".
9-94
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
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