Siemens SINUMERIK 840C Installation Instructions Manual page 1070

04.96
Example:
Parameterization of DB 2 for reading without acknowledgement of the signal path feedrate
(signal No. = 2) in the 3rd channel is as follows:
Byte no.
DL 0
DR 0
DL 1
DR 1
DL 2
DR 2
DL 3
DR 3
DL 4
DR 4
DL 5
DR 5
DL 6
DR 6
Writing these signals from the PLC is not permitted. If an attempt is made to perform a write
access, the error code 41 "Configuration parameter 2 incorrect" is indicated in DB 2 DR 0.
Examples for "Servo Trace" or high-speed data channel
The following abbreviations are used:
MW = Measured value, i.e. the measured value that can be read off in the trace curve or the
data transfer range of the "high-speed data channel" received on the PLC side.
RW = Real value, i.e. the measured value converted into the physical quantity. Usually, this
physical quantity has the same unit as in the part program, e.g. mm/min for the feedrate. This
unit is indicated in square brackets.
IT=Interpolation cycle [ms]
EF=Input resolution, corresponds to MD 5002.4-7
LF=Position controller resolution, corresponds to MD 18000.0-3
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
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12.28.8 Overview of function identifiers and configuring parameters (DB 2, DR 2 ... DR 6)
Content
0x01 Operation without acknowledgement/reading/set strobe
-- Error code from NC (output parameter)
0x13 Job number of PLC
0x01 No. of the data transfer area
0x10 Refresh rate NC
0x03 Function ID of the service function
0x00 Configuration parameter 1 LOW
0x00 Configuration parameter 1 HIGH
0x02 Configuration parameter 2 LOW = Signal No.
0x00 Configuration parameter 2 HIGH = Signal No.
0x00 Configuration parameter 3 LOW = Axis No.
0x00 Configuration parameter 3 HIGH = Axis No.
0x03 Configuration parameter 4 LOW = Channel/IKA No.
0x00 Configuration parameter 4 HIGH = Channel/IKA No.
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Meaning
6FC5197- AA50
12 Functional Descriptions
12–295