Emerson Micro Motion 9739 MVD Configuration And Use Manual page 45

Figure 3-9 ProLink II connection to RS-485 network
A
B
A
PC
B
25-to-9 pin adapter, if necessary
C
RS-485 to RS-232 signal converter
D
120-Ω, 1/2-watt terminating resistors at both ends of the segment, if necessary
E
DCS or PLC (must not be communicating with the transmitter during the ProLink II connection)
F
Transmitter
5. Start ProLink II.
6. Choose Connection→Connect to Device.
7. If necessary, set the connection parameters to match the Modbus/RS-485 parameters configured
in your transmitter.
To minimize configuration requirements, the transmitter uses an auto-detection scheme when
responding to a connection request. The transmitter will accept all connection requests within the
auto-detection limits (see Table 3-2 ).
Table 3-2 Auto-detection limits
Parameter
Protocol
Address
Baud rate
Stop bits
Parity
Configuration and Use Manual
E
D
C
Option
HART, Modbus ASCII, Modbus RTU
Responds to:
• Service port address (111)
• Configured HART Address (default = 0)
• Configured Modbus Address (default = 1)
Standard rates between 1200 and 38,400
0, 1
Even, Odd, None
Quick start with ProLink II
F
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