X1 / X2: Bus Connections - eta plus ELC X6-60 Technical Documentation Manual

3 Installation

3.2.11 X1 / X2: BUS connections


To ensure secure data transmission the use of a BUS-specific cable is
recommended.
Connector pin assignment:
The shield has to be put on Pin 1 = BUS GND. Insulate with shrunk-on sleeve.
The contacts of X1 and X2 are internally connected.
The RS485 BUS has to be terminated at the end of the BUS line according to PROFIBUS-Norm
IEC 61158 (also see Fig. 14). On the last ballast one of the connectors X1 or X2 will be left
open and can be used for the termination (available as accessories).
Pin assignment X1 / X2 for BUS:
Designation
BUS GND
BUS A
BUS B
BUS VCC
Pin assignment X1 / X2 for MODBUS:
Designation
BUS GND
BUS A
BUS B
BUS VCC
ELC X-Series-V1.5-06.18-GB
4
1
X1 X2 Description
X1.1 X2.1 GND insulated for BUS
X1.2 X2.2 Data line BUS A
X1.3 X2.3 Data line BUS B
X1.4 X2.4 external supply voltage 5V
insulated for BUS
X1 X2 Description
X1.1 X2.1 GND insulated for MODBUS
X1.2 X2.2 Data line A
X1.3 X2.3 Data line B
X1.4 X2.4 external supply voltage 5V
insulated for Bus-termination
subject to technical alterations
5V
390 Ω
B
220 Ω
A
390 Ω
Fig. 14: BUS-termination
technical
Shield connection BUS
Bus signal A
Bus signal B
+5V DC insulated, output for
terminator only
technical
Shield connection MODBUS
Inverting In-/Output
None inverting In-/Output
+5V DC insulated, output for
terminator only
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