WAGO -I/O-IPC-C6 Manual page 302

302 Appendix
Time referenced behavior
SLAVE _ ADD
SLOT
INDEX
LENGTH
ENABLE
CONFIRM
READ_ DATA
READ_ LEN
ERROR
Description
The function is activated when ENABLE switches to TRUE. The
DPM_MSAC1_READ function block requests a data block of a SLAVE_ADD
slave communicating with the master on the acyclic channel. The data selection is
determined by SLOT and INDEX. The LENGTH indicates the length of the data
block to be expected. READ_LEN outputs the length actually read.
If LENGTH is smaller than READ_LEN, an error is output on the ERROR output.
WAGO-I/O-SYSTEM 750
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Manual
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