Example slc ladder logic program, Example slc ladder logic program -3 – Rockwell Automation 1329I DeviceNet Option FRN 1.XXX User Manual
Page 41
Using I/O Messaging
5-3
Example SLC Ladder Logic
Program
The example program in
runs the 1329I unit in the forward and
reverse direction. It also provides a speed reference. Note that the scanner
must be in Slot 2 of the SLC 500 rack for this example.
Figure 5.2 Example SLC Ladder Logic Program
0000
Enable the 1747-SDN Scanner.
This rung clears a fault if the 1329I unit is faulted.
Bul 1329I Faulted Bit
I
:2
1747-SDN Run Bit
0001
Bul 1329I Reset fault
Bit
1747-SDN
1747-SDN
1747-SDN
O:2
O:2
0
18
16
1747-SDN
1747-SDN
16
16
This rung starts the 1329I unit running forward when either it is not running or if it is at speed and running in reverse.
Bul 1329I Faulted Bit
Bul 1329I At Reference
Bul 1329I At Reference
Bul 1329I Net Control
Bul 1329I Net Ref
Bul 1329I Speed
Command
I
:2
0002
O:2
L
U
1747-SDN
19
Bul 1329I Running
Reverse
Bul 1329I Running
Reverse
Bul 1329I Running
Forward Bit
Bul 1329I Run
Forward Bit
I
:2
1747-SDN
18
I
:2
1747-SDN
17
Bul 1329I Run Reverse
Bit
Bul 1329I Run Reverse
Bit
Bul 1329I Run Forward
Bit
O:2
1747-SDN
23
I
:2
1747-SDN
19
I
:2
1747-SDN
1747-SDN
17
16
This rung sends a run reverse command to the 1329I unit when it is running forward and is at speed.
Bul 1329I Faulted Bit
I
:2
0003
O:2
L
U
1747-SDN
23
Bul 1329I Running
Forward Bit
I
:2
1747-SDN
18
I
:2
1747-SDN
16
O:2
1747-SDN
21
This rung sets the net reference and net control bits and sends a speed command of 1800 RPM.
0004
O:2
L
L
0005
END
1747-SDN
22
Mov
Move
Source
Dest
1800
1800<
O:2.2
1800<
O:2