8 (32)
4.2
Operational Modes
4.2.1
ASCII Gateway Mode
In the Gateway mode, the CAN@net NT is hooked to the local intranet or internet (firewall
needed). This allows a TCP/IP host within the reach of this intranet or internet to connect to the
CAN@net NT and gain control of the CAN system. The Ethernet TCP/IP host can exchange
commands and CAN messages using the ASCII protocol. The server relays the commands and
messages to the CAN bus and vice versa.
Fig. 1
Gateway mode
For information about the communication in Gateway mode and commands that are used to
exchange CAN messages see Software Design Guide
CAN@net NT 100/200/420 Generic Protocol
for Gateway Mode
on
.
4.2.2
Bridge Modes
A single device can be used as Local CAN Bridge, which allows to map individual messages from
and to each CAN port of the device. The CAN-Ethernet-CAN Bridge mode allows to connect CAN
systems over an Ethernet TCP/IP network, for example the local intranet or the internet (firewall
needed). Minimum two devices are required for a CAN-Ethernet-CAN Bridge. One must be
configured as master and one as slave.
For detailed descriptions of the features in the different modes (e.g. MQTT, Action Rules, cyclic
transmission) and information about the configuration see User Manual
CAN-Gateway
Configurator CANbridge NT & CAN@net NT 100/200/420
on
.
Possible Bridge Modes with CAN@net NT 100:
•
Local CAN Bridge
•
CAN-Ethernet-CAN Bridge with 2 devices
Possible Bridge Modes with CAN@net NT 200:
•
Local CAN Bridge
•
CAN-Ethernet-CAN Bridge with 2 devices
Possible Bridge Modes with CAN@net NT 420:
•
Local CAN Bridge
•
CAN-Ethernet-CAN Bridge with 2 devices
•
CAN-Ethernet-CAN Bridge with 3 devices
•
CAN-Ethernet-CAN Bridge with 4 devices
CAN@net NT
(Gateway)
Host System
1
4
3
2
CAN
CAN or CAN-FD
1+2:
3+4:
CAN@net NT User Manual
4.01.0332.20000 1.7 en-US
