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11. CIU 202 Modbus RTU commissioning, step-by-step guides
11.1 Hardware setup, CIU 202
11.2 Hardware setup, CIU 262 call-up connection
11.3 Hardware setup, CIU 262 data connection
If the sensor configuration is changed, restart CIU
XX2 unit to ensure a correct scaling of the sensor
value.
Step
Action
1
Complete the system configuration.
This can be done either via Grundfos GO Remote or Grundfos PC Tool Wastewater.
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 necessary cables from CIU 202 to the Modbus network.
7
Connect the power supply cable to CIU 202, and switch the unit on.
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.
CIU 202 is now ready to be accessed via the Modbus network.
Step
Action
1
Connect the communication cables from CIU 260 to the wastewater pumps. See CIU quick guide instruction.
2
Fit an antenna to the CIM module SMA connector. See section
6.1.1 Fitting a cellular antenna
3
Insert the SIM card in the CIM 260. See section
4
Connect the mains cable to CIU 262 and power on the CIU 262. See the CIU quick guide instruction.
5
Power on the Grundfos product
6
Observe that LED2 turns permanently green indicating that CIM 260 is fitted correctly in the CIU unit. See section
.
7
Observe that LED1 blinks yellow and changes to yellow pulsing after approximately 30 s, indicating that the cellular
network connection is working. See section
By making a call-up from a phone the connection can be verified, LED1 turns permanently yellow.
8
To configure CIU 262 for a call-up connection, follow the instructions in the "CIM 260 SMS commands installation and
operating instructions", which you can find in Grundfos Product Center.
9
To verify the settings after completion, use the SMS command "SMSSETTINGS".
CIU 262 is now ready to be accessed from a Modbus RTU master via call-up or via SMS commands.
Step
Action
1
Connect the communication cables from CIU 262 to the wastewater pumps. See CIU quick guide instruction.
2
Fit an antenna to the CIM module SMA connector. See section
6.1.1 Fitting a cellular antenna
3
Insert the SIM card in CIM 260. See section
4
Connect the mains cable to CIU 262 , and power on the CIU 262. See the CIU quick-guide instruction
5
Power on the Grundfos product.
6
Observe that LED2 turns permanently green, indicating that CIM 260 is fitted correctly in the CIU unit. See section
.
7
Observe that LED1 blinks yellow and changes to yellow pulsing after approximately 30 s, indicating that the data
connection is working. See section
8
To configure CIM 260 for a data connection, follow the instructions in the "CIM 260 SMS commands", which you can
download from Grundfos Product Center.
CIU 262 is now ready to be accessed from a Modbus TCP master via a data connection or via SMS commands.
