Mitsubishi Electric Melsec QJ71LP21 - Precautions When Using Link Dedicated Instructions

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MELSEC-Q
2 SYSTEM CONFIGURATION
2.2.1 Precautions when using link dedicated instructions
When accessing to other stations from MELSECNET/H network modules (who issue
the request) with function version B or later upon link dedicated instructions, the
handling methods are different depending on the module of the target station.
The handling methods for each module of the target station are explained below.
(1) Link dedicated instructions modified for function version B
The data length of the SEND, READ, SREAD, WRITE and SWRITE instructions
is changed (480 words 960 words.)
(a) When the target station is a network module
Request issued by
Target station
CC-Link IE
Controller
Network
module
CC-Link IE
Field Network
module
MESLECNET/H network module
MESLECNET/10
network module
Function version B or D Function version A
480 words or less
481 to 960 words
1
: Processed normally
: Ends abnormally. Error code returned to the request source.
1: The SEND instruction ends abnormally. Error code returned to the
request source.
The READ, SREAD, WRITE, and SWRITE instructions are processed
normally.
(b) When the target station is a Q series Ethernet module
Request issued by
Target station (Q series Ethernet module)
Function version D
Function
version B
Function
version A
07082 or later
3
07081 or earlier
3
480 words or less
481 to 960 words
1 1 2
: Processed normally
: Ends abnormally. Error code returned to the request source.
1: The SEND instruction ends abnormally. Error code returned to the
request source.
The READ, SREAD, WRITE, and SWRITE instructions are processed
normally.
2: The operations for the SEND instruction are not normal. (Error support
available F7C3
H
)
The READ, SREAD, WRITE, and SWRITE instructions are processed
normally.
3: Serial number (first five digits)