Schneider Electric 840 USE 106 0 manual Segment 000813

Using a Quantum 984 HSBY System

Reverse Transfer The logic in network 2 of segment 1 contains a BLKM instruction and a STAT

Logicinstruction. The Standby enables the STAT. Bits 000815 and 000816 are controlled by bits 15 and 16 in the Hot Standby status register. The STAT instruction sends one status register word to 400101; this word initiates a reverse transfer to the Primary controller.

Remote I/O Logic Internal coil bit 000715 (status bit 11) controls the STANDBY MEMORY PROTECT OFF lamp. Internal coil bit 000716 (status bit 12) controls the STANDBY BATTERY FAULT lamp.

Segment 2

000813	000814
(Bit 13)	(Bit 14)

400101

000705

BLKM #001

BLKM Transfers the Status of

Reverse Transfer Register to

Internal Coils

Standby MEMORY PROTECT OFF Lamp Output Coil

000715	000813	000208
(Bit 11)	(Bit 13)
		Standby BATTERY FAULT
		Output Coil
000716	000813	000209
(Bit 12)	(Bit 13)

84 840 USE 106 00 January 2003