32
Annex
CAN bus
All devices (level, conductivity, temperature) are interconnected via CAN bus.
The CANopen protocol is used for the data exchange between the equipment groups. All devices have
an electronic address – the node ID. The four-core bus cable serves as power supply and data highway
for high-speed data exchange.
Setting the node ID
Due to the interdependence of the equipment, set the node IDs of the individual devices as follows:
Control unit NRS 1-40.1
Control unit
NRS 1-40.1
Sensor 1
e. g.
level electrode
NRG 1.-40
as device 1
Sensor 2
e. g.
level electrode
NRG 1.-40
as device 2
Sensor 3
e. g.
level electrode
NRG 1.-41.1
Sensor 4
e. g.
Temperature
transmitter
TRV 5-40
X
X + 1
X + 2
X + 3
X + 4
1
2
3
4
5
Reserved area
Control unit NRS 1-40.2
Control unit
NRS 1-40.2
Sensor 1
e. g.
level electrode
NRG 1.-41
Sensor 2
e. g.
Temperature
transmitter
TRV 5-40
Sensor 3
e. g.
Temperature
transmitter
TRV 5-40
X
X + 1
X + 2
X + 3
6
7
8
9
Reserved area
