Allen-Bradley Logix5000 Reference Manual page 180

Chapter 4 Input/Output Instructions (MSG, GSV, SSV, IOT)
Typed Read Command
16-bit words in PLC-5
processor
1
2
3
4
The typed commands maintain data structure and value.
180
The following table shows the data types to use with PLC5 Typed Read and
PLC5 Typed Write messages.
Table 4 - Data types for PLC5 Typed Read and Typed Write messages
For this PLC-5 data type
B
F
N
S
ST
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.
The following diagrams show how the typed and word-range commands differ.
The example uses read commands from a PLC-5 processor to a Logix5000
controller.
32-bit words in Logix5000 controller
1
2
3
4
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Use this Logix5000 data type
INT
REAL
INT
DINT (Only write DINT values to a PLC-5 controller if the value is
≥ − ≤
32,768 and 32,767.)
INT
STRING
Word-range Read Command
16-bit words in PLC-5
processor
1
2
3
4
The word-range commands fill the destination tag
contiguously. Data structure and value change depending on
the destination data type.
32-bit words in Logix5000 controller
2 1
4 3