Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 65)

Chapter
6
6-1
Status Words
A 1771-KA2 communication adapter module controls certain data table
words specified in the local station processor by the programmer. These
data table words indicate the status of command execution and provide
various types of diagnostic information for start-up and troubleshooting.
These locations are:
One or more pairs of adjacent words for START/DONE and
REMOTE/LOCAL FAULT bit storage
An ERROR CODE storage word
Refer to Figure 6.1. The programmer specifies the locations of these
status words when entering the communication zone rungs, as described
in chapter 5. Two START/DONE and REMOTE/LOCAL FAULT bit
storage words are defined by selection of the START bit in a command
rung. You specify the ERROR CODE storage word in the header rung.
Figure 6.1
Adjacent Status Word
ЙЙ
ЙЙ
ЙЙ
ЙЙ
02707 03210
G G G
A.
B.
Selection of Start Bit
Word 033
ЙЙ
ЙЙ
ЙЙ
ЙЙ
Word 032
Automatically Desig–
Start Bits Done Bits
Remote Fault Bits Local Fault Bits
Start Bit
nates Bits in Two
Adjacent Words
Communication
Adapter Controlled
ЙЙ
ЙЙ
Bits for Command Rung Shown
Program
Controlled
Command Rung
Start/Done and Remote/Local Fault Words
General