
10 (32)
Connectors
See
regarding terminal wiring and power supply requirements.
Power Connector (3-pole terminal block)
Pin
Function
Protective Earth
-
Power Ground
+
24 VAC or +9 to +36 VDC
Port A / KNX (2-pole terminal block)
Pin
Function
A1, A2
Not used
A3
KNX +
A4
KNX -
Port B / Modbus RTU EIA-485 (3-pole terminal block)
Pin
Function
B1
EIA-485 Line B (-)
B2
EIA-485 Line A (+)
B3
Signal Ground
Ethernet Port (RJ-45)
Pin
Function
1
TD+
2
TD-
3
RD+
6
RD-
4, 5, 7, 8
(reserved)
USB Port (USB Type A)
Can be used to connect a USB flash storage device for storing logfiles.
HDD drives are
not
supported (max. 150 mA load).
Console Port (USB Type Mini-B)
Used to connect the gateway to a computer for configuration.
Modbus to KNX Gateway User Manual
SCM-1202-050 1.2 en-US