Rockwell Automation Allen-Bradley Logix 5000 Series User Manual

Chapter 5
PCCC Commands
92 Rockwell Automation Publication 1756-PM020F-EN-P - January 2019
Request Format: [byte size][file number][file type][element number]
• [byte size] 1 byte, number of data bytes to be read
• [file number]1 byte for 0-254; for >=255, 3 bytes, 0xFF followed by 2-byte number, low byte first
• [file type] 1 byte. For file types and codes, see the DF1 Protocol and Command Set Reference Manual
, publication
1770-6.5.16.
Refer to SLC Communication Command.
• [element number] 1 byte, 0-254; 3 bytes for >=255, first byte=0xFF then 2-byte number, low byte first
Reply Format: [data]
[data]
See also
SLC Communication Commands on page 90
PCCC Commands on page 81
This write command provides a simpler version for writing data.
Request Format: [byte size][file number][file type][element number]
•
[byte size] 1 byte, number of data bytes to be written
• [file number]1 byte for 0-254; for >=255, 3 bytes, 0xFF followed by 2-byte number, low byte first
• [file type] 1 byte. For file types and codes, see the DF1 Protocol and Command Set Reference Manual
, publication
1770-6.5.16.
Refer to SLC Communication Command.
• [element number] 1 byte, 0-254; 3 bytes for >=255, first byte=0xFF then 2-byte number, low byte first
• [data]
Reply Format:
no data-only access
See also
SLC Communication Commands on page 90
PCCC Commands on page 81
SLC Protected Typed Logical
Write with 2 Address Fields
(CMD=0F, 4F; FNC=A9)

Rockwell Automation Allen-Bradley Logix 5000 Series Specifications

General

Brand	Rockwell Automation
Model	Allen-Bradley Logix 5000 Series
Category	Controller
Language	English