Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 173
Input/Output Instructions (MSG, GSV, SSV, IOT) Chapter 4
Specify this Data for a Logix5000 Controller as a Target Device
Use this configuration information if a Logix5000 controller is the target device.
Specify CIP Data Table Read and Write Messages
The CIP Data Table Read and Write message types transfer data between
Logix5000 controllers.
PLC-3 processor PLC3 typed read 182
PLC3 typed write
PLC3 word range read
PLC3 word range write
PLC-2 processor PLC2 unprotected read 183
PLC2 unprotected write
For this property Specify
Source Element · If you select a read message type, the Source Element is the address of the data you want to read in the target device.
Use the addressing syntax of the target device.
· If you select a write message type, the Source Tag is the first element of the tag that you want to send to the target
device. If you select a write message type, the Source Tag is the first element of the tag that you want to send to the
target device.
· The only source data type that is not supported is Boolean. All other data types—SINT, INT, DINT, LINT, REAL—can be
used. Any structure type predefined, module-defined, or user-defined also can be used to send messages.
Source Length The number of elements you read/write depends on the type of data you are using. An element refers to one ‘chunk’ of
related data. For example, tag timer1 is one element that consists of one timer control structure.
Destination Element · If you select a read message type, the Destination Element is the first element of the tag in the
Logix5000 controller where you want to store the data you read from the target device.
· If you select a write message type, the Destination Element is the address of the location in the target device where
you want to write the data.
Select this command If you want to
CIP Data Table Read Read data from another controller.
The Source and Destination types must match.
CIP Data Table Write Write data to another controller.
The Source and Destination types must match.
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