Publication 1762-RM001C-EN-P
21-10 Communications Instructions
“This Controller” Parameters
Communication Command
The controller supports six different types of communications commands.
If the target device supports any of these command types, the controller
should be capable of exchanging data with the device. Supported
commands include:
Table 21.2 Communication Command Types
Communication
Command
Description Used For
500CPU Read The target device is compatible with and supports the
SLC 500 command set (all MicroLogix controllers).
reading data
500CPU Write The target device is compatible with and supports the
SLC 500 command set (all MicroLogix controllers).
sending data
485CIF Read
(1)
(1) See Important note below.
The target device is compatible with and supports the
485CIF (PLC2).
reading data
485CIF Write
(1)
The target device is compatible with and supports the
485CIF (PLC2).
sending data
PLC5 Read The target device is compatible with and supports the
PLC5 command set.
reading data
PLC5 Write The target device is compatible with and supports the
PLC5 command set.
sending data
IMPORTANT
The Common Interface File (CIF) in the MicroLogix 1200,
1500, and SLC 500 processors is File 9. The CIF in the
MicroLogix 1000 controller is Integer File 7.
Table 21.3 Communication Commands
Command Function Description
0x01 unprotected read
0x08 unprotected write
0x0F 0x00 word range write
0x01 word range read
0x67 PLC typed write
0x68 PLC typed read
0xA1 logical read with 2 address fields
0xA2 logical read with 3 address fields
0xA3 scattered read
0xA7 file read
0xA9 logical write with 2 address fields
0xAA logical write with 3 address fields
0xAB logical write with 4 address fields
0xAF file write
To Next Page
Loading...
Need help?
General
