Rockwell Automation 1746-NO8V SLC 500 8-Point Analog Output Module/ User Manual - Manual (Page 24)

Publication 1746-UM026A-EN-P - September 2003
3-4 Preliminary Operating Considerations
Module Response to Slot
Disabling By writing to the status file in the modular SLC processor, you can
disable any chassis slot. Refer to the SLC 500 Instruction Set Reference
Manual, publication 1747-RM001, for the slot disable/enable
procedure.
When you disable an output module’s slot, the module holds its
outputs in their last state in Class 1 mode. When you re-enable the
output module’s slot, the data that is in the processor image table is
converted to an analog output signal during the next program scan.
Slot disabling only affects enabled channels. In Class 3 mode the
output will go to its fault state, as configured by the user, when the
slot is disabled. See Fault Options (configuration bits 12 and 13) on
page 4-10 for more information on output behavior under fault
conditions.
ATTENTION
!
POSSIBLE EQUIPMENT OPERATION
Always understand the implications of disabling a
module before using the slot disable feature.
Failure to observe this precaution can cause
unintended equipment operation leading to property
damage or personal injury.