turck BL20-E-4IOL, Руководство по эксплуатации

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2018/10
5.1.3 Process Data Mapping
The mapping of process data can be adapted application-specifically via the master's parameteriza-
tion.
Depending on the used fieldbus, it can be necessary to swap process data word-wise, double word-
wise or completely in order to align them to the data structure in the PLC.
The process data mapping is determined channel by channel through the parameters "process
input data mapping" "process output data mapping", "process input data length" and "process out-
put data length" (see
Parameters (Seite 20) ).
Example: mapping for field buses with Little Endian-format:
A Low byte, the lowest byte Low-Byte
High byte High-Byte
MSByte: Most Significant Byte
Mapping by
Master

field bus

PLC
Process input data
mapping
IO-Link device
Devices at channel
1... 4 Channel
parameterization
(
s. S. 23 )
Byte A Byte A
Byte 0 Status
Byte 1 Control
Byte 2 Distance Low byte Distance High byte 2 byte process data
(swap 16 bit)
Byte 3 High byte Low byte
Byte 4 Digital signal 1... 8 Digital signal 1... 8 2 byte process data
(direct)
Byte 5 Digital signal 9...15 Digital signal 9 ...15
Byte 6 Angle x-axis Low byte Angle x-axis High byte 4 byte process data
(swap 16 bit)
Byte 7 High byte Low byte
Byte 8 Angle y-axis Low byte Angle y-axis High byte
Byte 9 High byte Low byte
Byte 10 Diagnosis Counter/
position value MSByte 4 byte process data
(swap all)
Byte 11 Counter/
position value Low byte High byte
Byte 12 High byte Low byte
Byte 13 MSByte Diagnosis
Byte 14 reserved
Byte 15 reserved