Technical data

Consistency of the input and output bytes of the ZP
➣
FREE
mode: guaranteed consistency of
one
byte.
➣
CYCLE-SYNCHRONIZED
mode: guaranteed consistency over the
whole area.
☞
The ZP update points depend on the communication via the
L2 bus. Communication between the CP 5430 TF and passive
stations is constant (cyclic) and not dependent on handling
block calls (SEND/RECEIVE with ANR 210/211).
Special features
If a passive station fails, the input bytes assigned to this station are reset
(to the value 0). If the PLC changes from the RUN to the STOP mode, its
ZP output bytes are also reset so that the value "0" is transmitted. This is
also the reaction during start-up.
The following pages describe the FREE and CYCLE-SYNCHRONIZED
modes; how to set these modes with COM 5430 TF is described in the
example.
Communication with Cyclic I/Os B8976060/02
Volume 1 10 - 6