Modbus Tcp Or Bacnet Ip - Grundfos CIM 500 Installations- Und Bedienungsanleitung

6.2 Modbus TCP or BACnet IP

You can detect faults in a module by observing the
status of the two status LEDs. See the tables below.
CIM 500 fitted in a Grundfos product or CIM 500
fitted in a CIU 500
Ensure that SW1 is in position "1" if
Modbus should be selected or in position
"2" if BACnet should be selected.
Fault (LED status)
1. Both LEDs remain off when
the power supply is
connected.
2. LED2 is flashing red.
3. LED2 is permanently red.
4. LED1 is permanently red.
5. LED1 is permanently red and
green at the same time.
6. LED2 is permanently red and
green at the same time.
Possible cause
a) The module is fitted
incorrectly in the Grundfos
product.
b) The module is defective.
c) CIU 500 is defective.
a) No internal communication
between the module and the
Grundfos product.
b) No internal communication
between the CIU 500 and the
Grundfos product.
a) The module does not support
the connected Grundfos
product.
a) Fault in the Modbus
configuration of the module.
b) Fault in the BACnet
configuration of the module.
a) Error in firmware download.
a) Memory fault.
Remedy
Check that the module is fitted and
connected correctly.
Replace the module.
Replace CIU 500.
Check that the module is fitted
correctly.
• Check the cable connection
between the Grundfos product
and CIU 500.
• Check that the individual
conductors have been
connected correctly, for
example not reversed.
• Check the power supply to the
Grundfos product.
Contact the nearest Grundfos
company.
• Check that SW1 is set to "1".
• Check that the Modbus IP
address configuration is correct.
See section Modbus TCP
configuration.
• Check that SW1 is set to "2".
• Check that the BACnet IP
address and UDP port number
configuration is correct.
See section BACnet IP
configuration.
Use the webserver to download
the firmware again. See section
Update in the appendix.
Replace the module.
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