RS-485 connection parameters (continued)Table C-1:
Connection type Parameter Value
Optional or re-
quired? Auto-detection
Address The Modbus address config-
ured for this transmitter.
The default is 1.
Required No
Baud Rate 1200 to 38400 Optional Yes. The device accepts con-
nection requests that use
any valid setting, and re-
sponds using the same set-
ting.
Parity None, Odd, Even Optional Yes. The device accepts con-
nection requests that use
any valid setting, and re-
sponds using the same set-
ting.
Stop Bits 1 or 2 Optional Yes. The device accepts con-
nection requests that use
any valid setting, and re-
sponds using the same set-
ting.
7. Click Connect.
Need help?
If an error message appears:
• Switch the leads and try again.
• Verify the Modbus address of the transmitter.
• Ensure that you have specified the correct port on your PC.
• Check the wiring between the PC and the transmitter.
• For long-distance communication, or if noise from an external source interferes with the
signal, install 120-Ω ½-W terminating resistors in parallel with the output at both ends of
the communication segment.
• Ensure that there is no concurrent Modbus communication to the transmitter.
C.2.3
Connect with ProLink III over HART/Bell 202
You can connect directly to the primary mA terminals on the transmitter, to any point in a
local HART loop, or to any point in a HART multidrop network.
Using ProLink III with the transmitter
198 Micro Motion
®
Gas Specific Gravity Meters (SGM)
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