Allen-Bradley 1746-NT8 - PLC 5 Example with NT8 in Remote I;O Rack

Publication 1746-UM022B-EN-P - January 2005
Programming Examples 5-13
PLC 5 Example with NT8 in
Remote I/O Rack
The following example shows sample ladder logic when using a
PLC/5 controller to control the module in remote rack across the
Remote I/O network. The PLC/5 must use Block transfer reads and
writes to communicate with the 1746-NT8 module in a remote rack.
Note, the example provides code which will reconfigure the module if
the PLC/5 senses are remote rack fault. Also, the PLC/5 processor uses
the exact same configuration words as the SLC 500 processors.
EN
DN
TON
Timer On Delay
Timer T11:2
Time Base 1.0
Preset 7<
Accum 0<
TON
NT8_REG_CNF_TMR
T11:2
DN
NT8_REG_CNF_TMR/DN
U
B3:6
4
NT8_CHECKING_STS
END
0008
0009
After the NT8 has restored its normal I/O image, clear the NT8 checking status bit (B3/100).