User manual

Product Description
36
33002479 06 07/2008
Submenu: PLC Operations: Start, Stop, Init
Submenu: PLC Operations Hot Standby CPU
Start, Stop, Init
Screens
Display
Fields Available Description
Start PLC Press <ENTER> to
confirm Start
Pressing <ENTER> starts the controller
Stop PLC Press <ENTER> to
confirm Stop
Pressing <ENTER> stops the controller
Init PLC Press <ENTER> to
confirm Init
Pressing <ENTER> initializes the controller
On safety processors, this command is only
available in maintenance mode
Screen Field Option Description
Hot Standby
State:
State
read only
PRIMARY CPU Controller serves as primary CPU
unit
STANDBY CPU Controller serves as standby
CPUunit
Offline Controller not connected to another
Hot Standby
Mode:
Mode
(modifiable
only if the key
switch is in the
unlocked
position)
RUN STS steady Controller is active and is either
serving as primary CPU controller
or able to take over the primary
CPU role if needed
STS
flashing
Controller is transferring/updating
and when the transfer is done, RUN
will stay on steady
OFFLINE STS steady Controller is taken out of service
without stopping it or disconnecting
it from power
If the controller is the primary CPU
unit when the Mode state is
changed to OFFLINE, control
switches to the standby CPU unit. If
the standby CPU controller is taken
OFFLINE, the primary CPU unit
continues to operate without a
backup
STS
flashing
Controller is transferring/updating
and when the transfer is done,
OFFLINE will stay on steady