Rockwell Automation 1785-l11B, -L20B, -L30B, -L40B, -L40L, -L60B, -L60L, -L80B Enhanced PLC-5 Programmable Controllers Installation Instructions - Manual (Page 11)

Publication 1785-IN062A-EN-P - May 2005
Enhanced PLC-5 Programmable Controllers 11
Configure the I/O Chassis
Configure the I/O chassis by doing the following:
1. Set the backplance switches.
1
1 Regardless of this switch setting, outputs are turned off when any of the following occurs:
- controller detects a runtime error
- an I/O chassis backplane fault occurs
- you select program or test mode
- you set a status file bit to reset a local rack
2 If an EEPROM module is not installed and controller memory is valid, the controller's PROC LED indicator blinks,
and the processor sets S:11/9, bit 9 in the major fault status word. To clear this fault, change the controller from
program mode to run mode and back to program mode.
3 If the controller's keyswitch is set in REMote, the controller enters remote RUN after it powers up and has its
memory updated by the EEPROM module.
4 A processor fault (solid red PROC LED) occurs if processor memory is not valid.
5 You cannot clear processor memory when this switch is on.
4 5
2 - slot
1 - slot
1/2 - slot
1
Always
Off
19309
6 7
Outputs of this I/O chassis remain in their last state when
a hardware failure occurs.
1
Outputs of this I/O chassis are turned off when a
hardware failure occurs.
1
EEPROM memory transfer to controller memory at power-up. 2, 3
EEPROM memory transfers to controller memory if controller memory
not valid.
EEPROM memory does not transfer to controller memory. 4
Controller memory protection disabled.
Controller memory protection enabled. 5
Not allowed
Processor Memory Protection
Switch
8
off
on
EEPROM Transfer
Addressing
Last State
Switch
on
off
Switches
Switches
off off
off on
on off
on on
off off
on on
on off
Pressed in
at top ON (closed)
Pressed in
at bottom OFF (open)
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3
4
5
6
7
8
O N O F F