Rockwell Automation 1746-NI16V SLC 500 Analog Input Modules User Manual - Manual (Page 47)

Publication 1746-UM001A-US-P
Preliminary Operating Considerations 4-11
Response to Slot Disabling By writing to the status file in your modular SLC processor you can
disable any chassis slot. Refer to your programming device’s manual
for the slot disable/enable procedure.
Input Response
When a slot is disabled, the 1746-NI16 module continues to update its
input image table. However, the SLC processor does not read inputs
from a module that is disabled. Therefore, when the processor
disables the module slot, the module inputs appearing in the
processor image table remain in their last state and the module’s
updated image table is not read. When the processor re-enables the
module slot, the current state of the module inputs are read by the
processor during the subsequent scan.
Output Response
The SLC 500 processor may change the module output data
(configuration) as it appears in the processor output image. However,
this data is not transferred to the module. The outputs are held in their
last state. When the slot is re-enabled, the current data in the
processor image is transferred to the module.
ATTENTION
!
Always consider the implications of disabling a
module before using the slot disable feature.