Hi
I am having issues that I think may be associated with add-on instructions:
1, I am using AOI's in ladder logic for controlling valves (open,close,fail to open-after 5 seconds, fail to close, after 5 seconds) and pump (start, stop, alarm)
2. During the execution of the program they are working fine, however if the E-stop is pressed the outputs of the PLC are inhibited and valves are going to be closed and the pumps are going to be off.
3. if the E-stop is released some how, immediately ( remember the 5 secs timer for the valves alarm) I am seeing the alarms open or close for the valves and pump failure for the pumps, I have checked while online and the outputs associated with the alarms are 1, but inside the logic of the AOI the rungs associated with the alarms 0.
do I need to use any scan mode or something ?
I am using Compact Logix L30ER with RSlogix 5000 V20
I am having issues that I think may be associated with add-on instructions:
1, I am using AOI's in ladder logic for controlling valves (open,close,fail to open-after 5 seconds, fail to close, after 5 seconds) and pump (start, stop, alarm)
2. During the execution of the program they are working fine, however if the E-stop is pressed the outputs of the PLC are inhibited and valves are going to be closed and the pumps are going to be off.
3. if the E-stop is released some how, immediately ( remember the 5 secs timer for the valves alarm) I am seeing the alarms open or close for the valves and pump failure for the pumps, I have checked while online and the outputs associated with the alarms are 1, but inside the logic of the AOI the rungs associated with the alarms 0.
do I need to use any scan mode or something ?
I am using Compact Logix L30ER with RSlogix 5000 V20