Programming the Local Host
Chapter 5
532
Figure 5.20
Retry Delay
TOF
035
0.1
033
02
/
033
12
/
111
11
/
L
020
00
111
11
011
11
/
Remote
Fault
Local
Fault
Input
Compare
Input
Transition
011
11
Compare
Rung 1
011
11
111
11
Input
Compare
Rung 2
Rung 4
Rung 5
U
020
00
032
02
Done
Transition
032
12
020
00
035
15
Timeout
Transi
tion
Start
Rung 3
PR 050
AC 000
032
02
/
Done
Monitoring Remote/Local Fault Bit
When it cannot execute a command, the PLC-2/DHII interface sets a
remote or local fault bit ON. These bits, in the data table of the local host
processor, are located in the word immediately following the start/done
word. They indicate not only that a command was not executed, but also
point to the general type of fault condition which prevented command
completion.