IAI America RCM-GW-DV - Manual (Page 9)

3
DeviceNet Gateway
(5) DeviceNet
DeviceNet is a device-level open network used widely for FA and other applications. Since the
communication specifications are open, DeviceNet-compliant devices made by different
manufacturers can communicate with one another without dedicated programs.
Currently the DeviceNet standard is managed by a nonprofit organization called ODVA (Open
DeviceNet Vendor Association, Inc.).
Key features of DeviceNet are listed below:
[1] A wire-saving communication network realizing complete multi-vendor connectivity
[2] The operating specifications are uniform around the world, which means that the same network
configurations can be used overseas.
[3] Slave devices are treated as remote I/Os of the PLC in which the DeviceNet unit is installed.
Accordingly, communication with slave devices does not require special programs.
[4] High line efficiency ensures high-speed responses.
For details on DeviceNet, refer to the operation manuals for your master unit and PLC.
Along with this manual, also read the operation manual for each controller connected.
This DeviceNet Gateway cannot be used in any way not described as feasible in this manual.
To prevent malfunction, the customer is also advised not to use settings, wirings and other uses other
than those described as feasible in this manual.
1.3 Application Example of Gateway Unit
The network illustrated below gives an application example of the Gateway Unit.
CPU
unit
DeviceNet
unit
(master
station)
Remote I/O
station DeviceNet Gateway
(Remote I/O station)
Remote I/O
station
Remote I/O
station
SIO communication network (Modbus)
DeviceNet