Specify PLC-5 Messages
Use the
PLC-5
message types to communicate with PLC-5
controllers.Select this command: | To: |
---|---|
PLC-5 Typed Read | Read 16-bit integer, floating-point, or string type data and maintain data integrity. |
PLC-5 Typed Write | Write 16-bit integer, floating-point, or string type data and maintain data integrity. |
PLC-5 Word Range Read | Read a contiguous range of 16-bit words in PLC-5 memory regardless of data type.This command starts at the address specified as the Source Element and reads sequentially the number of 16-bit words requested. The data from the Source Element is stored, starting at the address specified as the Destination Tag. |
PLC-5 Word Range Write | Write a contiguous range of 16-bit words from Logix 5000 memory regardless of data type to PLC-5 memory.This command starts at the address specified as the Source Tag and reads sequentially the number of 16-bit words requested. The data from the Source Tag is stored, starting at the address specified as the Destination Element in the PLC-5 processor. |
Data types for
PLC-5
Typed Read and Typed Write messagesThe following table shows the data types to use with
PLC-5
Typed Read and PLC-5
Typed Write messages.For this PLC-5 data type: | Use this Logix 5000 data type: |
---|---|
B | INT |
F | REAL |
N | INT |
DINT (Only write DINT values to a PLC-5 controller if the value is ≥ −32,768 and ≤ 32,767.) | |
S | INT |
ST | STRING |
The Typed Read and Typed Write commands also work with SLC 5/03 processors (OS303 and above), SLC 5/04 processors (OS402 and above), and SLC 5/05 processors.
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