Datasheet

233DeviceNet Unit
Programmable
Controllers
CJ1W-DRM21
DeviceNet Unit
Multivendor, Multibit Network
• Control of up to 32,000 points (2,000 words) per
master.
• Remote I/O communications can be allocated in any
area using DM settings.
• 16 DeviceNet Units can be mounted for each CPU
Unit (3 max. for fixed allocations).
• When using the Configurator (see note), remote I/O
can be allocated in an order independent of node
address.
Note: The Configurator is allocating a node-address if con-
nected to DeviceNet using a DeviceNet communica-
tion card. It is not doing this if connected through the
serial communications interface of the CPU.
• DeviceNet Units can be used as a master and
a slave, and this functionality can be used simul-
taneously.
• DeviceNet Units allow DeviceNet networks to be
treated exactly like Controller Link, Ethernet, or
other networks for message communications or
remote programming and monitoring by CX-Pro-
grammer.
Function
OMRON supports the DeviceNet open field network, a multivendor
network for machine/line control and information. The following types of
communications are possible.
1. Remote I/O communications for automatic data transfers between
the CPU Unit and Slaves (with no programming in the CPU Unit).
2. Explicit message communications. This can be programmed from
the CPU unit (IOWR and CMND instructions) and read from/write
to other DeviceNet units.
3. With explict message communication FINS commands can be
send to other devices that support FINS messaging.
System Configuration
Slaves
63 nodes max.
500 Kbps: 100 m
125 Kbps: 500 m
MULTIPLE I/O TERMINALS
Configurator
DeviceNet
Unit
DeviceNet I/O
Link Unit
(Part of CX-One
software suite)
Y201-EN2-03.book Seite 233 Donnerstag, 30. März 2006 1:52 13