Delta AH500 Manual page 653

Name
Master in Clear
mode
As shown in the following figure, the option "Slave receives no data in Clear Mode" is selected
as the "Fail-Safe Behavior" when the master is in STOP state.
Chapter 14 Remote I/O Communication Module AHRTU-PFBS
Setting
I/O module continues running
I/O module stops running
Explanation
for example.
If a Siemens PLC is used as the
master and PQD256（containing
PQB256, PQB257, PQB258 and
PQB259） corresponds to the
32-point output module, PQB256
corresponds to Y0.0~Y0.7,
PQB257 to Y0.8~Y0.15, PQB258
to Y1.0~Y1.7, PQB259 to
Y1.8~Y1.15.
If AH10PFBM-5A is the master
and D6000 & D6001 correspond
to the 32-point output module, in
D6000, bit0~bit7 correspond to
Y0.8~Y0.15 and bit8~bit15 to
Y0.0~Y0.7; in D6001, bit0~bit7
correspond to Y1.8~Y1.15 and
bit8~bit15 to Y1.0~Y1.7.
The option is recommended to
select when the Siemens PLC is
used as the master.
AHRTU-PFBS-5A continues
running when the option "Slave
receives no data in Clear Mode"
under "Fail-Safe Behavior" is
selected and meanwhile the
master is in STOP state.
AHRTU-PFBS-5A stops all I/O
modules from running when the
option "Slave receives no data in
Clear Mode" under "Fail-Safe
Behavior" is selected and
meanwhile the master is in STOP
state.
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