Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 114)

Publication 1794-UM001G-EN-P - January 2007
114 FlexLogix Back-Up on DeviceNet
Reading Back-up Status
You can read the back-up status of the DeviceNet scanner with a
single rung of ladder logic. The back-up state is useful for debugging
or more sophisticated back-up schemes. The message in this rung
uses the SINT data type.
Figure shows the rung you can use to read the back-up state.
Table describes the possible values this message may return when
reading the back-up status of the DeviceNet scanner.
Rung 6 message configuration and communication tabs
If the message reads
this value: the back-up state of the DeviceNet scanner is:
0 No back-up scanner detected
1 Primary scanner forcing IDLE (back-up in RUN but primary in
IDLE)