Rockwell Automation Allen-Bradley DriveLogix 5730 User Manual page 145

Type of MSG
Instruction: Supported Source File Types:
DriveLogix writes In the DriveLogix controller, specify the source data type
to PLC-5 or SLC based on the destination device:
PLC-5: SINT, INT, DINT, or REAL
SLC: INT
Example source element: array_1
Communicating with Another Logix-Based Controller
All Logix-based controllers can use MSG instructions to communicate with
each other. The following examples show how to use tags in MSG
instructions between Logix-based controllers.
Type of MSG Instruction:
Logix-based controller writes to Logix-based
controller
(CIP Data Table Write)
Logix-based controller reads from
Logix-based controller
(CIP Data Table Read)
The source and destination tags:
• must be controller-scoped tags.
• can be of any data type, except for AXIS, MESSAGE, or
MOTION_GROUP.
Communicating with Other Controllers Over ControlNet
The DriveLogix5730 controller also uses MSG instructions to communicate
with PLC and SLC controllers. The MSG instructions differ depending on
which controller initiates the instruction.
For MSG instructions originating from a DriveLogix5730 controller to a
PLC or SLC controller:
Communicating with Devices on an ControlNet Link
Example Source and Destination:
source tag array_1
destination tag array_2
source tag array_1
destination tag array_2
Supported Destination File Types:
Specify the destination file type based on the
destination device:
PLC-5 typed write: S, B, N, or F
PLC-5 word-range write: S, B, N, F, I, O, A, or D
SLC: B or N
Example destination tag: N7:10
7-11