11. Modbus RTU commissioning, step-by-step
guides
If the sensor configuration is changed, restart the CIM
module or CIU unit to ensure a correct scaling of the
sensor value.
11.1 Hardware setup, CIM 200
Step Action
1 Install CIM 200 in the Grundfos product according to the product documentation.
2
Complete the product configuration, for example sensor configuration.
This can be done either on the pump control panel, via Grundfos GO.
3 Select the Modbus slave address (1-247).
4 Select the bit rate of the Modbus slave.
5 Select parity and stop bits of the Modbus slave, even parity with 1 stop bit or no parity with 2 stop bits.
6 If necessary, set line termination.
7 Connect the necessary cables from CIM 200 to the Modbus network.
8
Confirm that the GENIbus LED is permanently green and that the Modbus LED is either off, if no master is actively polling the slave, or flashing
green, indicating error-free communication.
CIM 200 is now ready to be accessed via the Modbus network.
11.2 Hardware setup, CIU 200
Step Action
1
Complete the pump configuration, for example sensor configuration and local mode.
This can be done either via Grundfos GO or Grundfos PC Tool E-Products.
2 Select the Modbus slave address (1-247).
3 Select the transmission speed of the Modbus slave.
4 Select parity and stop bits of the Modbus slave, even parity with 1 stop bit or no parity with 2 stop bits.
5 If necessary, set line termination.
6 Connect the GENIbus cable from CIU 200 to the E-pump.
7 Connect the necessary cables from CIU 200 to the Modbus network.
8 Connect the power cable to CIU 200, and switch the unit on.
9
Confirm that the GENIbus LED is permanently green and that the Modbus LED is either off, if no master is actively polling the slave, or flashing
green, indicating error-free communication.
CIU 200 is now ready to be accessed via the Modbus network.
11.3 Hardware setup, CIM 260 data connection
Step Action
1 Install CIM 260 in the Grundfos product according to the product documentation.
2 Fit an antenna to the CIM module SMA connector.
3 Insert the SIM card in CIM 260.
4 Power on the Grundfos product.
5 Observe that LED2 turns permanently green.
6
Observe that LED1 blinks yellow and changes to yellow pulsing after approximately 30 seconds, indicating that the cellular network connection is
working.
7
To configure CIM 260 for a data connection, follow the instructions in the "CIM 260 SMS commands installation and operating instructions", which
you can download from Grundfos Product Center.
8
To verify the APN settings after completion, use the SMS command "APNSETTINGS".
To verify that the data connection is working, use the SMS command "APNSTATUS". The connection state must be "Context active" if ready and
"Connected" if a Modbus TCP master is already communicating.
CIM 260 is now ready to be accessed from a Modbus TCP master via a data connection, or via SMS commands.
Related information
6.1.1 Fitting a cellular antenna
6.1.2 Inserting the SIM card
6.2 Status LEDs
32
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