SA & SB configuration in 800XA alarm
How can i get the alarms for SA / SB power supply failure for TB840 in 800Xa alarm list
You should be able to find this in the common system alarm list.
For example :
The alarmlist should contain Object name of your module bus name given in the hardware usually it is "11", Condition should state "HWError" and in Message you would "Device Specific Bit 29". This means RPA or B (Redundant Power A or B) failure.
The exact explanation for each device specific bit will be available under Systemstatus viewer in the control structure under the respective Controller.