Emerson MICRO MOTION 2700 Instrukcja Instalacji Strona 107

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Transmitter Configuration and Use: Series 1000 and 2000 Transmitters 97
Optional Configuration continued
Required Configuration Optional ConfigurationUsing the TransmitterFlowmeter Startup
8.15.2 Changing the HART polling address
The transmitter’s HART polling address is used by devices on a network to identify
and communicate with the transmitter using HART protocol. The HART polling
address must be unique on the network. If the transmitter will not be accessed using
HART protocol, the HART polling address is not required.
The HART polling address is used for both HART/Bell202 and HART/RS485
communications; i.e., for HART communication over either the primary mA output
terminals or the RS-485 terminals (AN transmitters only).
Note: Devices using HART protocol to communicate with the transmitter may use either the HART
polling address or the HART tag (see Section 8.16) . You may configure either or both, as required by
your other HART devices.
Valid HART polling addresses are 0–15.
Zero is a special-purpose polling address that enables the primary mA output to vary according to the
assigned process variable. When a transmitter’s HART polling address is set to any value other than
zero, the primary mA output is fixed at 4 mA, and will not report any variation in the assigned process
variable.
8.15.3 Changing the Modbus address
The transmitter’s Modbus address is used by devices on a network to identify and
communicate with the transmitter using Modbus protocol. The Modbus address
must be unique on the network. If the transmitter will not be accessed using Modbus
protocol, the Modbus address is not required.
Valid Modbus addresses are:
•115
32–47
64–79
96–110
Note: If you are using ProLink II, and you are connected to the transmitter over a Modbus
connection, ProLink II will lose communication as soon as you click the Apply button. To reestablish
communication, you must change the communication settings specified in the ProLink II Connect
dialog box (see Chapter 3). This does not apply to service port connections.
8.15.4 Changing the RS-485 parameters
RS-485 parameters control how the transmitter will communicate over its RS-485
terminals. The RS-485 parameters are listed in Table 8-10.
Model 1500 AN
Model 1700 AN
Model 1700 IS
Model 2500 CIO
Model 2700 AN
Model 2700 IS
Model 2700 CIO
Model 1500 AN
Model 1700 AN
Model 2500 CIO
Model 2700 AN
Model 1500 AN
Model 1700 AN
Model 2500 CIO
Model 2700 AN
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