Appendix 1.2 Upgraded Functions Of The Network Module - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

APPENDICES

Appendix 1.2 Upgraded functions of the network module

Additional function
Multiple CPU
Multiple CPU systems are supported.
system supported
The following link dedicated instructions were added:
Addition of link • RRUN instruction (remote RUN instruction)
dedicated • RSTOP instruction (remote STOP instruction)
instructions • RTMRD instruction (other station's clock data read instruction)
• RTMWR instruction (other station's clock data write instruction)
The data length of the following link dedicated instructions was
Data length of link increased from 460 words to 960 words:
dedicated • SEND instruction
instructions • RECV instruction
increased to 960 • RECVS instruction
words • READ/SREAD instructions
• WRITE/SWRITE instructions
• The network module can be mounted on the base unit of the
Redundant system redundant system and used (redundant network module).
supported • A system switching request is automatically issued to the
control system CPU in case of a data link error or malfunction.
In the following link dedicated instructions, the target station CPU
type can be designated (the redundant system's control
Target station CPU
system/standby system and system A/B can be designated):
type designation in
• READ/SREAD instructions
link dedicated
• WRITE/SWRITE instructions
instruction
• REQ instruction
(System
• RRUN instruction
specification in
• RSTOP instruction
redundant system)
• RTMRD instruction
• RTMWR instruction
MELSECNET/H Compatibility with the MELSECNET/H Extended mode
Extended mode (The maximum number of link points per station has been
compatibility increased from 2000 bytes to 35840 bytes)
Target station CPU In the following link dedicated instructions, the target station CPU
type specification in type can be specified. (The CPU No. in the multiple CPU system
App - 3
The network module undergoes the addition of functions and specification changes by
version upgrade.
For checking of the function version of the network module, refer to Section 2.3.
(1) Compatibility with old models
When replacing a previous network module (function version A or B) with the one
of function version D, there is no need to change the parameters, programs, and
switch settings.
However, to use any function not available for a previous version, the parameters
and programs must be modified.
(2) Additional functions
The table below shows the functions added to function version B or later.
Description
MELSEC-Q
Function version
A B
(Serial No.
(first five digits)
is "10101" or
later.)
• CPU module
Redundant
Safety CPU
(Serial No.
(first five digits)
is "06092" or
(Serial No.
(first five digits) • Redundant
is "10101" or
later.) (Serial No.
(first five digits)
is "07102" or
• Safety CPU
(Serial No.
(first five digits)
is "08102" or
(Serial No. (Serial No.
D
other than
CPU and
later.)
CPU
later.)
later.)
App - 3