Leds - Grundfos CIU 202 Functional Profile And User Manual

5.5 LEDs

CIM 200 Modbus module has two LEDs. See fig. 4.
• Red and green status LED1 for Modbus communication
• Red and green status LED2 for internal communication
between CIM 200 and the Grundfos product.
LED1
Status Description
Off No Modbus communication.
Flashing green Modbus communication active.
Flashing red Fault in the Modbus communication.
Fault in the CIM 200 Modbus
Permanently red
configuration.
LED2
Status Description
Off CIM 200 has been switched off.
No internal communication between CIM
Flashing red
200 and the CIU 202 unit.
CIM 200 does not support the Grundfos
Permanently red
product connected.
Internal communication between CIM 200
Permanently green
and the CIU 202 unit is OK.
During startup, there may be a delay of up to 5
seconds before the LED2 status is updated.
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