Programming the Local Host
Chapter 5
517
Refer to Figure 5.10. You specify the addresses of these status words
when entering the communication zone rungs. A pair of start/done and
remote/local fault words is defined by the selection of the start bit in a
command rung. You specify the error code storage word in the header
rung.
Figure 5.10
UserSelected Status Words
Start/Done Word
Remote/Local Fault Word
Error Word
Local Station Data Table
CAT. NO. 1779-KP2 PLC-2/DHII INTERFACE
L1
L2/N
GND
NOTE: Start/Done and Remote/Local Fault words must
be adjacent. Use one pair for each group of up
to 8 commands.
Any accessible data table words may be used as status words in the station
processor.
Start/Done Word
The start/done word is the first of a pair of adjacent status words for
module use. This word stores a start bit and corresponding done bit for
each of up to eight commands. If you program more than eight command
rungs at a station, you must provide for additional (preferably contiguous)
pairs of start/done and remote/local fault words.
