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MELSEC-Q
1 OVERVIEW
1
1 OVERVIEW
This manual explains the specifications and name of each component of the
QJ71DN91 DeviceNet master/slave module, which is used in combination with the
MELSEC-Q Series PLC CPU.
Please see DeviceNet Specification Manual (Release 2.0), Volumes 1 and 2, for the
specifications of DeviceNet.
DeviceNet is a registered trademark of Open DeviceNet Vendor Association, Inc.
POINT
Most of the DeviceNet products on the market are assumed to be compatible.
However, compatibility with the products of other manufacturers is not guaranteed.
1.1 Features
This section explains the features of the QJ71DN91.
(1) The module conforms to the DeviceNet Specifications Manual (Release 2.0).
(2) The module can function as a master node, slave node, or master/slave node of
DeviceNet.
Master made by
other manufacturer
24V power
supply
Master station
MS
Slave side
I/O communication between the master station and slave station is possible.
Communication is not possible.
: DeviceNet slave
M
S
(Node No. 10)
(Node No. 2)
S
S
S
(Node No. 4)
QJ71DN91 slave
(Node No. 3)
M
M
S
S
S
(Node No. 7)
(Node No. 8)
M
S
QJ71DN91
master
(Node No. 5)
QJ71DN91
master + slave
(Node No. 6)
QJ71DN91
slave
(Node No. 9)
QJ71DN91 slave
(Node No. 1)
(3) The parameters of QJ71DN91 can be set by any of the following three methods:
• Setting the parameters using GX Configurator-DN
• Setting the parameters using the TO instruction of a sequence program
• Setting the parameters using auto configuration