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11.4 CIU 502 Modbus TCP communication setup
Step
Action
1
Check that both CIU 502 and the wastewater pump are powered off.
2
Remove the front cover of the CIU 502 unit.
3
Select position 1 at the CIM 500 module protocol rotary switch. See section
4
Connect the communication cables from CIU 502 to the wastewater pump. See CIU quick guide.
5
Power on the CIU 502 unit and the wastewater pump, and observe LED2 turn permanently green and LED1 remaining off.
6
Connect one of the CIU 502 ethernet ports (RJ45) to a PC using an ethernet cable.
Configure the PC ethernet port to the same subnetwork as CIM 500, for example 192.168.1.1 and the subnet mask to
7
255.255.255.0. See section
Open your internet browser and make contact to the CIM 500 webserver.
8
Default address: 192.168.1.100
Log in to the webserver. Default:
9
User name: admin
Password: Grundfos
10
In the menu column to the left select: Configuration > Real time ethernet protocol
11
Type in an IP address belonging to the same subnet as your PC, for example 192.168.1.2.
12
Type in the subnet mask 255.255.255.0, and leave the rest of the settings at their factory default values.
13
Click [Submit] to transfer the new settings and close the webbrowser.
CIU 502 is now ready to be accessed from a Modbus TCP master via one of its ethernet ports. Use the IP address selected under step
10. The Modbus address (Unit ID) in the Modbus TCP telegram is not used.
•
The CIU 502 LED 1 flashes green when Modbus TCP communication takes place.
•
You can use the two ethernet ports to daisy chain CIM 500 modules.
•
It is possible to have connection to the webserver simultaneously with a connection to a Modbus TCP master.
•
It is possible to have connection to more Modbus TCP masters simultaneously, for example to have connection to PC Tool CIM/CIU
while connected to another Modbus TCP master.
A.1 How to configure an IP address on your PC
7.2 Setting the Industrial Ethernet
on page 57.
protocol.
39
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