Installation manual

1 Publication 1747-RM001G-EN-P - November 2008
Appendix H
Supported Read/Write Commands
Supported Read/Write
Commands
This appendix provides the read and write commands that are supported by
the SLC 500 Fixed, SLC 5/01, SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05
processors. Refer to the DF1 Protocol and Command Set Reference Manual,
publication 1770-6.5.16, for additional command details.
Table H.1 Supported Read/Write Commands
Command Name CMD/FNC SLC 500 Fixed,
5/01
SLC 5/02 SLC 5/03, 5/04, and 5/05
Unprotected Read (485 CIF Read) 01/ respond only initiates/responds initiates/responds
Unprotected Write (485 CIF Write) 08/ respond only initiates/responds initiates/responds
PLC-5 Word Range Read 0F/00 N/A N/A
respond only
(1) (2)
(1)
Series C FRN 6 and higher.
(2)
Supports both Logical Binary and Logical ASCII Addressing.
PLC-5 Word Range Write 0F/01 N/A N/A
respond only
(1) (2)
PLC-5 Bit Write 0F/02 N/A N/A
respond only
(1) (2)
PLC-5 Read-Modify-Write 0F/26 N/A N/A
respond only
(1) (2)
PLC-5 Typed Write (PLC5 Write) 0F/67 N/A N/A
initiates/responds
(2)
PLC-5 Typed Read (PLC5 Read) 0F/68 N/A N/A
initiates/responds
(2)
Protected Typed Logical Read with 2
Address Fields
0F/A1 respond only respond only respond only
Protected Typed Logical Read with 3
Address Fields (CPU500 Read)
0F/A2 respond only initiates/responds initiates/responds
Protected Typed Logical Write with 2
Address Fields
0F/A9 respond only respond only respond only
Protected Typed Logical Write with 3
Address Fields (CPU500 Write)
0F/AA respond only initiates/responds initiates/responds
Protected Typed Logical Write with
Mask
0F/AB respond only respond only respond only