Modbus Tcp Or Bacnet Ip - Grundfos CIM 500 Montage- Und Betriebsanleitung

6.2 Modbus TCP or BACnet IP

You can detect faults in a module by observing the
status of the two status LEDs.
The prerequisite is that CIM 500 is fitted in a
Grundfos product or in a CIU 500.
6.2.1 Both LEDs remain off
Both LEDs remain off when the power supply is connected.
Cause
The module is fitted incorrectly in the Grundfos
product.
The module is defective.
CIU 500 is defective.
6.2.2 LED2 is flashing red
Cause
No internal communication between the module and
the Grundfos product.
No internal communication between CIU 500 and the
Grundfos product.
6.2.3 LED2 is permanently red
Cause
The module does not support the connected
Grundfos product.
6.2.4 LED1 is permanently red
Cause
Fault in the Modbus configuration of the module.
Fault in the BACnet configuration of the module.
Related information
A.1. Webserver configuration
6.2.5 LED1 is permanently red and green at the same time
Cause
Error in firmware download.
Related information
A.1. Webserver configuration
Ensure that SW1 is in position "1" if
Modbus should be selected or in position
"2" if BACnet should be selected.
Related information
4. Status LEDs
Remedy
• Check that the module is fitted and connected
correctly.
• Replace the module.
• Replace CIU 500.
Remedy
• Check that the module is fitted correctly in the
Grundfos product.
• Check the cable connection between the Grundfos
product and CIU 500.
• Check that the individual conductors are connected
correctly, for example, not reversed.
• Check the power supply to the Grundfos product.
Remedy
• Contact the nearest Grundfos company.
Remedy
• Check that SW1 is set to "1".
• Check that the Modbus IP address configuration is
correct.
• Check that SW1 is set to "2".
• Check that the BACnet IP address and UDP port
number configuration is correct.
Remedy
• Use the webserver to download the firmware again.
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