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MELSEC
1 OVERVIEW
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1 OVERVIEW
This is a manual you read when using the MELSCNET/H board in the MELSECNET/H
mode or MELSECNET/H Extended mode. When using the MELSCNET/H board in
the MELSCNET/H network, refer to "Q Corresponding MELSECNET/H Network
System Reference Manual (PLC to PLC network)". Also, when using the board in the
MELSECNET/10 network system, refer to "For QnA/Q4AR Corresponding
MELSECNET/10 network system reference manual".
1.1 Overview
The MELSECNET/H is a network system which is used to connect multiple sequencer
modules and personal computers, and is equipped with functions and performance
realized in the MELSECNET/10 for general control of a production line.
In the MELSECNET/H, there is a network system which includes an optical loop
system (communication rates: 10 Mbps, 25 Mbps) and a coaxial bus system
(communications rate: 10 Mbps), enabling large volume communications at high
speeds.
Also, in order to improve the performance of the MELSECNET/10 network and achieve
upward compatibility, MELSECNET/H supports the MELSECNET/ H and
MELSECNET/H Extended modes (high performance, high speed mode) and the
MELSECNET/10 Mode (function compatible and performance compatible mode).
Mode Description
MELSECNET/H mode
Set this mode when all CPUs within the network are QCPUs and
RCPUs.
MELSECNET/H Extended
mode
The maximum number of link points per station has been increased
compared with the MELSECNET/H mode.
In excess of 2000 bytes, a maximum of 35840 bytes can be set.
Set this mode when the system uses many link points per station.
MELSECNET/10 mode
This mode is used to operate the MELSECNET/H board on a
MELSECNET/10 network.
MELSECNET/H
MELSECNET /10
QCPU
QCPU
QCPU
QCPU
AnU
QnA
QCPU
QCPU
GX Developer
MELSECNET/10
Mode
1: The multiple CPU system compatible network module is for function version B and subsequent products.
2: In the multiple CPU system, a network module that becomes a relay station is the same as the control CPU.
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QCPU
MELSECNET
/H
Personal Computer
MELSECNET/H Board
(Q80BD-J71BR11)
Personal Computer
MELSECNET/H Board
(Q80BD-J71LP21-25)
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Summary of Contents for Q80BD-J71BR11
Page 2: ......
Page 24: ...A 22 A 22 MEMO ...
Page 50: ...4 6 4 6 MELSEC 4 FUNCTION MEMO ...
Page 92: ...6 36 6 36 MELSEC 6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION MEMO ...
Page 132: ...10 2 10 2 MELSEC 10 MELSEC DATA LINK LIBRARY MEMO 10 ...
Page 138: ...11 6 11 6 MELSEC 11 PROGRAMMING MEMO ...
Page 164: ...12 26 12 26 MELSEC 12 APPLICATION FUNCTIONS MEMO ...
Page 166: ...13 2 13 2 MELSEC 13 ERROR CODE MEMO 13 ...
Page 223: ......