Bradley Smoker user manual Chassis Backplane, PLC-5 Controller in the I/O Chassis

E-4Switch Setting Reference

I/O Chassis Backplane PLC-5 Controller in the I/O Chassis

Always O ff

	Switch	Last State
1
	on	Outputs of this I/O chassis remain in their last state when
		a hardware failure occurs. 1
	off	Outputs of this I/O chassis are turned off when a
		hardware failure occurs. 1

	Switches			Addressing
4		5
	off	off		2 - slot
	off	on		1 - slot
	on	off		1/2 - slot
	on	on		Not allowed
	Switches				Memory Module Transfer
6		7
	off	off		memory module transfer to processor memory at powerup. 2 3
	on	on		memory module transfers to processor memory if processor memory
				not valid.
	on	off		memory module does not transfer to processor memory.
	Switch		Processor Memory Protection
8
							Pressed in
	off	Processor memory protection disabled.
							at top ON (closed)
	on	Processor memory protection enabled.				4	Pressed in
							at bottom OFF (open)

1Regardless of this switch setting, outputs are turned off when any of the following occurs:

processor detects a major fault

an I/O chassis backplane fault occurs

you select program or test mode

you set a status file bit to reset a local rack

2If a memory module is not installed and processor memory is valid, the processor’s PROC LED

indicator blinks, and the processor sets S:11/9 in the major fault status word. Power down the processor chassis and either install the correct memory module or set switch 6 ON.

3If the processor’s keyswitch is set in REMote, the processor enters remote RUN after it powers up and has its memory updated by the memory module.

4You cannot clear processor memory when this switch is on.

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Publication 1785-UM012D-EN-P - July 2005