Liquiline CM442/CM444/CM448 System integration
Endress+Hauser 45
7.3 Fieldbuses
7.3.1 HART
You can communicate using the HART protocol via current output 1.
‣ Connect the HART modem or handheld to current output 1 (communication load 230 - 500
Ohm).
‣ Establish the connection via your HART device.
‣ Operate Liquiline via the HART device. To do so, follow the instructions in the manual.
All the information on HART communication is provided on the CD (--> BA00486C).
7.3.2 PROFIBUS-DP
With the fieldbus module 485 and the appropriate device version, you can communicate via
PROFIBUS DP.
Connect the PROFIBUS data cable to the terminals of the fieldbus module as described → ä 36.
All the information on PROFIBUS communication is provided on the CD (SD01188C).
7.3.3 Modbus
With the fieldbus module 485 and the appropriate device version, you can communicate via
Modbus RS485 or Modbus TCP.
The RTU and ASCII protocols are available when connecting via Modbus RS485. You can switch
to ASCII on the device.
Connect the Modbus data cable to the terminals of the fieldbus module (RS 485) or to the RJ45
(TCP) port as described (→ ä 36).
All the information on Modbus communication is provided on the CD (--> SD01189C).
7.3.4 EtherNet/IP
With the fieldbus module 485 and the appropriate device version, you can communicate via
EtherNet/IP.
Connect the EtherNet/IP data cable to the RJ45 socket of the fieldbus module as described.
All the information on EtherNet/IP communication is provided on the CD (--> SD01293C).
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