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Option Description
Primary
Use this setting if no other host is on the network. The Field Communicator is not
a host.
12. Click Connect.
Need help? If an error message appears:
• Verify the HART address of the transmitter.
• Ensure that you have specified the correct COM port.
• Check the physical connection between the PC and the transmitter.
• Increase or decrease resistance.
• Ensure that there is no conflict with another HART master.
B.2.4 Make a Modbus/RS-485 connection
You can connect directly to the RS-485 terminals on the transmitter or to any point on the
network.
Prerequisites
• ProLink III installed and licensed on your PC
• One of the following:
- RS-232 to RS-485 signal converter
- USB to RS-485 signal converter
• An available serial port or USB port
• Adapters as required (for example, 9-pin to 25-pin)
Procedure
1.
Attach the signal converter to the serial port or USB port on your PC.
2. Connect the leads from the signal converter to terminals 33 (RS-485/A) and 34
(RS-485/B).
Tip
Usually, but not always, the black lead is RS-485/A and the red lead is RS-485/B.
Using ProLink III with the transmitter
206 Micro Motion
®
Model 1500 Transmitters with Analog Outputs