Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 210)

ASCII Module
PLC-2 Family Processors
Appendix A
AĆ42
Figure A.18
Example Read (Only) Program
I0001
00
WO005:0000
00
MOV
MOVE FROM A TO R
A : WO0001:0000
0000000000000000
R : WO0002:0000
0000000000000000
RUNG NUMBER RM0
Load zeros into command word 1 with
selector switch or on first scan
RUNG NUMBER RM1
WO003:0000
07
WO002:0000
07
Power-up/reset power-up initialization bit
WO003:0000
15
WO002:0000
15
WO003:0000
15
WO002:0000
15
WO005:0000
02
RUNG NUMBER RM2
Status word 1 - Command word 1
read data available
WO002:0000
15
WO005:0000
02
RUNG NUMBER RM3
WO003:0000
15
L
WO002:0000
15
WO005:0000
02
RUNG NUMBER RM4
WO003:0000
15
U
Status word 1 - Command word 1
read handshake
Status word 1 - Command word 1
Read handshake
WO003:0000
07
S0003
01
WO005:0000
01
L
RUNG NUMBER RM5
WO005:0000
RUNG NUMBER RM6
TON
TIMER ON
1.0 SECOND
TP =
TA =
T0001
2
0
T0001
17
TE
T0001
15
TD
01
Energize at power-up to load initialization words. Also energized on
on 1st scan after processor selection of run monitor mode
Energize timer on power-up