Parameterisation With The Integrated Web Server; Modbus Master Configuration; Ip Address; Address Assignment And Modbus Operations - Festo CMMO-ST-C5-1-LKP Original Instructions Manual

4 Modbus TCP
4.2.2

Parameterisation with the integrated web server

1. Call up online connection with web browser: "http://192.168.178.1/"
2. To parameterise and store, activate device control (Device Control).
3. In the Control Interface tab, set and save the control interface (Save):
– "MODBUS"
4. In the FHPP Profile tab, set and save the device profile (Save):
– "FHPP channel"
– "FHPP + FPC channel"
5. In the Network tab, determine and save the network settings (Save):
– "DHCP server active"
– "Obtain an IP adress automatically"
– "Use the following IP adress" (fixed setting IP address, subnet mask and standard gateway)
After parameterisation, the Modbus master can be configured è section 4.3.
4.3

Modbus master configuration

4.3.1

IP address

The IP address of the motor controller as a Modbus/TCP user is identical to the IP address set in the
FCT or web server.
4.3.2

Address assignment and Modbus operations

The following operations (Modbus transactions) are supported:
– Read Holding Registers (0x03)
– Read Exception Status (0x07)
– Write Multiple Registers (0x10)
– Read/Write Multiple Registers (0x17)
– Read Device Identification (0x2B)
The start address is always "0"; the byte sequence is always "Big endian".
Tab. 4.3 shows the supported Modbus commands.
22 Festo – GDCP-CMMO-ST-LK-C-HP-EN – 2017-05b – English