The COM LED will then blink for some seconds, and then switch to a steady on
state, so indicating there is some communication activity between Primary and
Standby controllers. At that point, the STS LED should have turned to a blinking
state, indicating so that the system is now redundant, and that data are exchanged
from the primary to the Standby controller.
The keypad of the first controller should display "Run Primary" and the second
controller should display "Run Standby". To return the display to the default, press
the ESC key and the keypad displays its first page.
Checking the
CRP LED Status
When the Hot Standby system is operational, the green "Ready" LED is steady on
for both the Primary's and Standby's RIO communication processor module (CRP).
Also, the Primary CRP's green "Com Act" LED should be steady on, while the LED
of the Standby CRP should be blinking.
COM
STS
COM
STS
Setting-up
21
Checking the
CRA LED Status
When the Hot Standby system is operational, the green "Ready" LED is steady on
for the RIO communication adapter module(s) (CRA).
Also, the CRA's green "Com Act" LED will be steady on if any I/O module has been
configured.
Additionally, the CRA's red "Fault" LED label will be steady on if the I/O modules that
are physically recognized on the rack do not match the I/O modules that have been
configured for that rack.
