Rockwell Automation 20-COMM-R Remote I/O Adapter - Manual (Page 49)

Using Discrete and Block Transfer I/O 4-13
20-COMM-R Remote I/O Adapter User Manual
Publication 20COMM-UM004D-EN-P
Figure 4.7 ControlLogix Example I/O User Ladder Logic
Tag Name Type
DriveLogicStatus INT
DriveCommandStart BOOL
DriveCommandStop BOOL
DriveCommandJog BOOL
DriveStatusActive BOOL
DriveStatusFaulted BOOL
DriveStatusAtSpeed BOOL
DriveLogicCommand INT
Read Active, Faulted, and At Speed drive status bits and place in respective tags.
1
0
DriveLogicStatus.1 DriveStatusActive
2
DriveLogicStatus.7 DriveStatusFaulted
3
DriveLogicStatus.10 DriveStatusAtSpeed
Transfer Start, Stop, Jog, and Clear command tags into drive's output image. Additional logic on the Stop rung causes the Stop command to be sent
continuously until the drive reports that it has stopped.
4
DriveCommandStart DriveLogicCommand.1
Note that the user's STOP input tag is set up as a normally CLOSED pushbutton.
5 /
DriveCommandStop
DriveLogicStatus.1 DriveLogicCommand.0
DriveLogicCommand.0
6
DriveCommandJog DriveLogicCommand.2
7
8
DriveCommandClearFault DriveLogicCommand.3
(End)
Get the drive's Logic Status word.
Copy File
Source The20CommR:I.Data[1]
Dest DriveLogicStatus
Length 1
COP
Send the desired Logic Command to the drive.
Copy File
Source DriveLogicCommand
Dest The20CommR:O.Data[1]
Length 1
COP