beautypg.com

Rockwell Automation 22-COMM-P PowerFlex Profibus Adapter User Manual

Page 94

background image

D-6

SLC Ladder Logic Examples

Figure D.3 Drive 1 Control/Reference/Parameter Access Routine

Controlling the Logic Command word in the drive. B3:21/* bits are controlled elsewhere in the user program.

0

B3:21

0

Station 2
Stop
Command

N20:6

0

Station 2
Logic Command
STOP

1

B3:21

1

Station 2
Start
Command

N20:6

1

Station 2
Logic Command
START

2

B3:21

2

Station 2
Jog
Command

N20:6

2

Station 2
Logic Command
JOG

3

B3:21

3

Station 2
Clear Faults
Command

N20:6

3

Station 2
Logic Command
CLEAR FAULTS

4

B3:21

4

Station 2
Reverse
Command

N20:6

4

Station 2
Logic Command
FORWARD

5

B3:21

4

Station 2
Reverse
Command

N20:6

5

Station 2
Logic Command
REVERSE

To control the speed reference over the Profibus, the three Reference Select bits (bits 14-12) need to have the values 011.

6

N20:6

12

Station 2
Logic Command
REFERENCE SELECT 0

7

N20:6

13

Station 2
Logic Command
REFERENCE SELECT 1

8

B3:21

5

"Never Closed"

N20:6

14

Station 2
Logic Command
REFERENCE SELECT 2