130 Fieldbus Communication
WAGO-I/O-SYSTEM 750
750-806 Fieldbus Controller DeviceNet
TM
Manual
Version 2.0.0
The DeviceNet
TM
taps are available in 2 versions.
Table 56: DeviceNet
TM
Tap Versions
Items
Description
810-900/000-001 Closed design with connection options for 6
lines. The enclosure provides protection in harsh environments.
810-901/000-001 Open design for connecting 2 drop lines and 2 remote bus
cables.
All devices in the network communicate at the same baud rate. The bus structure
makes it possible to couple and decouple stations or to start up the system step by
step in a non-reactive manner.
Later upgrades have no effect on stations that are already in operation. If a device
malfunctions or is added to the network, it is automatically detected.
11.1.1.4 Network Grounding
The devices can either be powered by the DeviceNet
TM
bus or have their own
power supply. However, the network can only be grounded at one location. The
network is preferably grounded in the network center (surge arrestor V- and
“drain” shielding for round media) to optimize capacity and to minimize
interference.
Not permitted are ground loops via devices that are not disconnected from the
power supply. The device must either be insulated or, if that is not possible, the
power must be disconnected from the device.
11.1.1.5 Interface Modules
In a network, all WAGO DeviceNet
TM
- fieldbus nodes are delivered to operate as
slaves in a network. Master operation is performed by a central control system,
such as PLC, NC or RC.
Integrate library for master functionality!
The programmable fieldbus controller 750-806 can assume the master operation
when extended with the “DevNet.lib” library.
The fieldbus devices are linked via interface modules.
As an interface module, WAGO offers the PC interface cards for DeviceNet
TM
,
ISA DeviceNet
TM
Master 7 kByte (order No. 758-340), PC104 DeviceNet
TM
Master 7 kByte D-Sub, straight, angled (order No. 758-341) and PCI DeviceNet
TM
Master 7 kByte (order No. 758-342) from the WAGO-I/O-SYSTEM 758.
Other interface modules for programmable logic controllers are also available
from other manufacturers.
