Rockwell Automation 1747-PT1, D1747NP002 Hand-Held Terminal - Manual (Page 254)

Instructions
Chapter 18
I/O Message and Communication
18–8
When you are online, you can locate the cursor on the MSG instruction,
press the Zoom key, and observe the current status of some of these bits:
F1 F2 F3 F4 F5
ZOOM on MSG –(MSG)– 2.0.0.0.2
NAME: MESSAGE READ/WRITE
MSG TYPE: WRITE LD/LS ADDR:N7:40
TARGET: 500 CPU TARG NODE: 5
CTRL BLK: N7:0 TARG OS/AD:N7:6
EN ST DN ER NR TO MSG LEN: 2
0 0 0 0 0 0
EDT_DAT
Successful MSG Instruction Timing Diagram
Rung goes True.
Target node
receives packet.
Target node processes packet
successfully and returns data
(read) or writes data (success).
EN
EW
ST
1
0
1
0
1
0
DN
ER
1
0
1
0