Omron NE1A-SCPU01 - 07-2009 Operation Manual page 111

Remote I/O Allocations
Communications
established at all
Controller mode
Safety Master
change
connections.
Bit 4
Bit 5
d5 error at Safety
Controller
Master
mode change
connection
Bit 4
Bit 5
Example: Monitoring NE1A-series Run Status and Normal Status Flags from the PLC
Controller error
occurs
Bit 6
Bit 7
Error remains in
effect
Example: Monitoring NE1A-series Run Status Flags from the PLC
Standard I/O
communications
error
Bit 6
Communications
established at all
Safety Slave
connections.
• Example: Monitoring NE1A-series Controller Safety I/O Communications
Error and Status Flags from the PLC (when d5 and d6 Errors Occur)
d6 error at
Safety Master
connection
Controller
Error
mode
cleared
change
Idle to RUN
Note Be careful when monitoring general status from a Standard PLC, because all
bits are regarded as OFF from the PLC ladder program before communica-
tions are established or while a communications error is in effect.
Controller
mode change
Safety Master
Error
communications
cleared
error occurs.
Communications
Communications
established at
established at all
Safety Master
Safety Master
connection where
connections.
d6 error occurred.
Controller
Error
error
cleared
occurs
Error remains
in effect
Standard I/O
Error cleared
communications error
Section 4-3
Safety Slave
communications
Error
error occurs.
cleared
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