Grundfos CIM 500 Installation And Operating Instructions Manual page 112

A.4 Modbus TCP configuration
Fig. 3 Real Time Ethernet Protocol Configuration - Modbus TCP
Object Description
The default value is 502, the official IANA-assigned Modbus TCP port number.
The number 502 will always be active implicitly.
TCP Port Number
If you select another value in the web server configuration field, both the new value and
value 502 will be active.
IP Address The static IP address for the module on the Modbus TCP network.
Subnet Mask The subnet mask for the module on the Modbus TCP network.
Gateway The default gateway for the Modbus TCP network.
The module can be configured to automatically obtain the IP address from a DHCP
Use DHCP
server on the network.
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