User manual

Chapter 6
PLC-5/VME Processor
Communications Commands
6-19
Important: The PLC-5/VME processor ADDR, OFFSET, and TOTAL
TRANS fields work together when the total number of words to be written
requires multiple packets.
Message Format
OFFSETDST
00
PSN
00
SRC
00
PSN
00
CMD
0F
STS
00
TNS FNC
67H
Command Packet
LNH
Hi
LNH
Lo
DST
00
PSN
00
SRC
00
PSN
00
CMD
4FH
STS
Reply Packet
TNS
up to 244 bytes
Lo Hi
PLC-V5
a
EXT
STS
06 FF FILE #
Lo
FF ELEM #
Lo
PLC-V5 ADDR
Hi Hi
ADDR
TOTAL
TRANS
a — data type ID code byte(s).
b — DATA byte field.
See Data Typed section
b
Error Codes
Extended status codes are reported in the reply packet. The STS byte
contains 00H if no error, F0H when the PLC-5/VME processor detects an
error. If an error, the error code is indicated in the EXT STS byte
as follows:
STS EXT STS Description
00H – No error
F0H
02H Illegal address—not enough fields specified
03H Illegal address—specified too many address levels
06H Illegal address—file does not exist
07H Illegal address—beyond the end of the file
0BH Access denied—privilege violation
11H Mismatched data type
Refer to page D-3 for additional information on PCCC status codes.