14
9. RS-232 port
Applies to:
• G 403
• G 406.
The modules function as a gateway and control a
radio modem.
To be connected to the RS-232 port with one of the
cables supplied:
• DCD cable:
- RJ45 for 9-pin D-SUB plug.
- Colour: Black.
• RI cable:
- RJ45 for 9-pin D-SUB plug.
- Colour: Grey.
Connection of RJ45 plug to D-SUB plug
9.1 G 403
Functions as a gateway between the Ethernet and
the RS-232 port.
9.2 G 406
Functions as a gateway between the GENIbus and
the RS-232 port.
10. GENIbus
Applies to:
• G 404
• G 405
• G 406.
The GENIbus enables the connection of other
Grundfos E-products for wireless communication.
11. Connection
11.1 Power supply
The G 400 can be connected to a supply voltage of
24 VDC or directly to the PU 101.
Note:
No other equipment than the CU 401 and the
G 400 range must be connected to the PU 101.
The G 400 can also be connected to the PU 102
(UPS) to ensure continuous operation in case of
power cuts.
Note:
The G 400 incorporates a back-up battery
which maintains the GSM communication in case of
short power cuts.
Fig. 3
Example of connection
Fig. 4
Example of connection with PU 102
(UPS)
RJ45
RS-232
connection
9-pin D-SUB plug
RS-232 connection
Black
DCD cable
Grey
RI cable
Pin no.
Type
Pin no.
Type
Pin no.
Type
1
CTS
8
CTS
8
CTS
2
RTS
7
RTS
7
RTS
3
TXD
3
TXD
3
TXD
4
RXD
2
RXD
2
RXD
5
GND
5
GND
5
GND
6
DTR
4
DTR
4
DTR
7
DSR
6
DSR
6
DSR
8
DCD/RI
9
DCD
1
RI
8
1
5
4
3
2
1
9
8
7
6
T
M
03
12
93
16
05
TM
03 129
4 160
5
1 2 3
+ + -
-
PU 101
24Vdc/2.5A
N
L
G 401
CU 401
Antenna
Ethernet
1 2 3
+ + - -
PU 101
24Vdc/2.5A
N
L
G 401
CU 401
+
-
+
-
Battery
Battery
PU 102
PU 102
Antenna
Ethernet
