Technical data

Procedure with the FREE mode: master receives from slave
Explanation of Fig. 10.3:
➣
The byte received by ZP is transferred to the I/O area of the DPR within
the internal CP cycle.
➣
The control program can then work with these values under PY1.
PLC
program
execution
I/O
area in
CP-DPR
PY1
from BUS
0
10
10
10
9
9
0
9
The byte
received
by ZP
?
9
10
10
tt
10
Internal CP-
cycle =
"after processing
the polling list"
? undefined status
Fig. 10.3: FREE Mode: Master Receives from Slave
Communication with Cyclic I/Os B8976060/02
Volume 1 10 - 8