the I/O channels hold last value and no output signals are
transmitted to the I/Os.
See the following table as a reference when determining your CPM
operating mode:
Table 8-1: Operating modes for ControlEdge 900 Controller
Mode Switch
position on
CPM
STOP RUN REMOTE
Operating
mode
Stop Locked Run Locked Running Stopped
Switchover
command
Yes Yes Yes Yes
Enabling sync Yes Yes Yes Yes
Disabling sync Yes Yes Yes Yes
Becoming
primary
Yes Yes Yes Yes
Resetting
statistics
Yes Yes Yes Yes
Configuration
download
Yes No Yes
1
Yes
Firmware
download
Yes No Yes
2
Yes
Forcing
outputs
Yes
3
Yes Yes Yes
3
Warm/Cold
reboot
Yes No No Yes
Factory reset Yes No No Yes
Warm/Cold
start command
No N/A N/A Yes
Stop Command N/A No Yes N/A
Note:
1. Two types of configuration download: download changes and download all.
Download all is only available when the system is in Stopped or Stop Locked
120
Chapter 8 - Security
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