Plc-5 Sequencer Outputs - Allen-Bradley A-B QUALITY DL20 Series User Manual

Appendix G
Application Notes
PLC-5 Programming
Examples
PLC 5 Binary Radix
Data Table N7 Integer File
Address MSB 15
N7:0 0000 0000 0000 0000
N7:1 0000 0011 0000 1010
N7:2 0000 0010 0000 0001
N7:3 0000 0001 0001 1111
N7:4 0000 0011 0001 0001
N7:9 0000 0000 0001 1111
N7:10 0000 0000 0000 0001
D8 and D9 are not used in this example.
G–12
Table G.B

PLC-5 Sequencer Outputs

Bit 9
SQO DL20
0 LSB Step# MS1
0 0
1 1
2 1
3 0
4 1
The steps of the sequencer can be viewed on your PLC-5 programming
software using the Data Monitor Command to view file #N7:0 file array.
The resulting message would be displayed:
The variable 287 on the above display is the accumulated value for T4:1, free
running timer.
Bit 8
DL20 DL20 Data Lines
MS0
D7 ..... D0
0 0000 0000
1 0000 1010
0 0000 0001
1 0001 1111
1
TIMER T4:1 = 287
Decoded
Data Comments
0 Initial output step for
SQO.
10 Special Msg #10
clears DL20 queue.
1 High Byte for variable
data = 256.
31 Low Byte for variable
data = 31.
17 Triggers message
#17.
T4:1.ACC = 287