Rockwell Automation DAG6.5.8 APPLICATION GUIDE SCADA SYSTEM User Manual
Page 386
Publication AG-UM008C-EN-P - February 2005
E-4 Sample Ladder Logic
SLC DF1 Half-Duplex Master Message-based Mode and DF1 Radio Modem initiated
MSG
SLC 5/03/04/05 DF1 Half-Duplex Master - Message-based Mode, Master-initiated MSG
Each MSG is assigned a "Finished" bit and a "Disable" bit. All of the MSG's are triggered simultaneously, but cannot be retriggered until all enabled
MSG's have completed either done or in error. After all enabled MSG's have completed, a time delay is inserted before retriggering. If no time delay is
desired (retriggering the MSG's as fast as possible), then set the T4:0 timer preset to zero. This example has 21 messages. You must delete or add
"MSG Finished" bits and "Disable MSG" bits to match the number of messages in your application.
0000
B3:16
1
MSG #1
Finished
B3:0
1
Disable
MSG #1
B3:16
2
MSG #2
Finished
B3:0
2
Disable
MSG #2
B3:16
3
MSG #3
Finished
B3:0
3
Disable
MSG #3
B3:16
4
MSG #4
Finished
B3:0
4
Disable
MSG #4
B3:16
5
MSG #5
Finished
B3:0
5
Disable
MSG #5
B3:16
6
MSG #6
Finished
B3:0
6
Disable
MSG #6
B3:16
7
MSG #7
Finished
B3:0
7
Disable
MSG #7
B3:16
8
MSG #8
Finished
B3:0
8
Disable
MSG #8
B3:16
9
MSG #9
Finished
B3:0
9
Disable
MSG #9
B3:16
10
MSG #10
Finished
B3:0
10
Disable
MSG #10
B3:16
11
MSG #11
Finished
B3:0
11
Disable
MSG #11
B3:16
12
MSG #12
Finished
B3:0
12
Disable
MSG #12
B3:16
13
MSG #13
Finished
B3:0
13
Disable
MSG #13
B3:16
14
MSG #14
Finished
B3:0
14
Disable
MSG #14
B3:16
15
MSG #15
Finished
B3:0
15
Disable
MSG #15
B3:17
0
MSG #16
Finished
B3:1
0
Disable
MSG #16
B3:17
1
MSG #17
Finished
B3:1
1
Disable
MSG #17
B3:17
2
MSG #18
Finished
B3:1
2
Disable
MSG #18
B3:17
3
MSG #19
Finished
B3:1
3
Disable
MSG #19
B3:17
4
MSG #20
Finished
B3:1
4
Disable
MSG #20
B3:17
5
MSG #21
Finished
B3:1
5
Disable
MSG #21
EN
DN
TON
Timer On Delay
Timer
T4:0
Time Base
1.0
Preset
5<
Accum
0<
TON
Trigger MSG's
Delay Timer