Liquiline CM442R/CM444R/CM448R System integration
Endress+Hauser 43
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.
More detailed information on HART communication is provided on the product pages on
the Internet (→ 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 34.
7.3.3 Modbus
With the fieldbus module 485 and the appropriate device version, you can communicate via
Modbus RS485 or Modbus TCP. For Modbus TCP, you can use the ETH module as an alternative
to module 485.
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 34).
7.3.4 EtherNet/IP
With the fieldbus module 485 or the ETH module and the appropriate device version, you can
communicate via EtherNet/IP.
Connect the EtherNet/IP data cable to the RJ45 socket of module 485 or the ETH module.
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