English (GB)
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6. Modbus GSM/GPRS, CIM 250 setup
Fig. 9 CIM 250 GSM module (top-side view)
6.1 Installation
6.1.1 Fitting a GSM antenna
An antenna must be connected to the CIM 250 to establish
connection to the GSM network.
External antenna
Connect the antenna cable to the SMA connection (pos. 1) of the
CIM 250. The antenna must be installed outside the control
cabinet in a position with good reception conditions.
Fig. 10 Fitting an external GSM antenna
6.1.2 Inserting the SIM card
Before inserting the SIM card into the CIM 250, remove the PIN
code, or set the PIN code to "4321".
Procedure
1. Insert the SIM card into a mobile phone.
2. Remove the PIN code from the SIM card, or set the PIN code
to "4321". See the manual of the mobile phone.
3. Insert the SIM card into the CIM 250. See fig. 11.
Fig. 11 Inserting the SIM card
TM04 2642 1210
Pos. Designation Description
1 Battery socket
2 SIM card holder
3 SMA connection for GSM antenna
4LED1
Yellow/green status LED for GSM/
GPRS communication
5LED2
Red/green status LED for internal
communication between the CIM 250
and the Grundfos product.
6SW1
Reset button.
Keep the button pressed for 5 seconds
to return to default settings.
Before installation, make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
Grundfos offers different kinds of antennas. No
antenna is supplied with the CIM 250. It must be
ordered separately.
TM04 2644 2808
Pos. Description
1 SMA connection for GSM antenna
2 Antenna cable for external GSM antenna
The slanted edge of the SIM card must point
downwards (away from the connector).
The connectors on the SIM card must face inwards
towards the CIM 250. See fig. 11.
TM04 2643 2808
Pos. Description
1 SIM card holder
2 SIM card