Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 169)

Appendix
A
AĆ1
PLCĆ2 Family Processors
The complete Getting Started Program with rung desriptions is described
in Figure A.1.
Figure A.1
Complete Getting Started Program (PLCĆ2 Family)
035
00
252
15
020
02
G
327
000
PUT
200
000
START
Loads zeros into command word one,
CW1, on first program scan
252
07
200
07
Sets/resets power-up initialization bit CW1(07)
252
07
020
OFF 10
Set at power-up to load initialization words
L
into BT write file, and allows initialization
using processor mode select switch
020
10
062
0.1
Energizes initialization timer at power-up
TON
PR 005
AC 000
062
15
020
OFF 10
U
Resets timer after transfer of initialization words
020
02
063
.01
TON
PR 300
AC 000
063
17
063
15
One-shot energizes timer for write handshaking
200
15
252
15
035
00
252
15
200
15
Read handshaking, CW1-SW1
Module toggles SW1(15) when it sends new status
or ASCII string. Then program toggles CW1(15)
in either of next two rungs to acknowledge receipt
of data.
200
ON 15
Read BT handshaking, acknowledgment of new data
L
LADDER DIAGRAM DUMP
~ ~
Complete Getting Started
Program, PLCĆ2 Family