Product description
Operating Instructions
Chapter
3
11
8014012/1EF3/2021-12-08
Subject to change without notice
© SICK AG
•
Germany
•
All rights reserved
A3M60 Basic
Tab. 4: Input data in the
message IO 04
Tab. 5: Output data in the
message IO 04
Tab. 6: Input data in the
message IO 08
Tab. 7: Output data in the
message IO 08
WARNING
3.4
Communication message
Depending on the communication module selected, the following information can be
configured as process data:
3.4.1
Message IO904
input (slave to PLC): position
output (PLC to slave): preset value
Data word
1
2
Value
Position MSW
Position LSW
Data word
1
2
Value
Preset MSW
1)
Preset LSW
2)
3.4.2
Message IO908
input (slave to PLC): position, velocity, time stamp
output (PLC to slave): preset value
Data word
1
2
3
4
Value
Position MSW
Position LSW
Velocity
Time stamp
Data word
1
2
3
4
Value
Preset MSW
Preset LSW
not used
not used
3.4.3
Position
The position is output in message IO<04 or IO<08 as an input to the PLC.
The position is stated in steps. The value is output in two data words (4 bytes). The value
range is always between 00000000 … 03FFFFFFh. The top limit is defined using the
configurable parameter
Total Measuring Range
(see section 3.5
parameters can be set”
on page 13).
Evaluate bit 31 of the input data using your control system to detect serious errors!
If, in the case of serious error, it cannot be ensured the position output is correct, this
situation is indicated by setting the most significant bit 31. The position value is then
outside the valid range and can be identified as clearly erroneous (see section 5.3.2
on page 22).
1)
Most significant word.
2)
Least significant word.
