Hach-Lange ORBISPHERE Model 51x User Manual - Manual (Page 79)

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Section 9 Communication Menu
Figure 38 Communication menu
The external RS-485 port of the main board is directly connected to a RS-485 bus (single
twisted pair). Optionally it can be connected to a fieldbus module (gateway).
The RS 485 menu allows to select between RS485 simple or Profibus DP communication
protocol, depending on application.
• Press on the text box to select either the RS-485 simple or the PROFIBUS-DP
communication protocol.