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26 ProLink
®
II Software for Micro Motion
®
Transmitters
Installation and Setup
2.2.6 Configure ProLink II connection parameters and connect to the transmitter
To connect to the transmitter, ProLink II must use connection parameters appropriate to the
transmitter.
• If you are connecting to an MVD Direct Connect system, ProLink II can use any of the
supported communication settings listed in Table 2-13. The core processor auto-detects
incoming communications parameters and switches to match.
• If you are connecting to a Model 2400S transmitter using the service port:
- For point-to-point connections, you can use a service port connection type.
- For multidrop network connections, you can use any Modbus/RS-485 connection type and
specify the transmitter’s Modbus address. The transmitter auto-detects incoming
communications parameters and switches to match. The service port auto-detection limits
are described in Table 2-14.
• If you use a service port or HART/Bell 202 connection type, the connection parameters are
standard: when one of these connection types is specified, ProLink II automatically uses the
appropriate parameters.
- HART/Bell 202 connections are always available on all transmitters.
- Service port connections are always available for all Model 1700/2700 transmitters and for
all Model 2400S transmitters.
- For Model 1500/2500 transmitters and Series 3000 transmitters, the RS-485 terminals are
accessible as a service port for a 10-second interval after power-up:
- If a service port connection is made during this interval, the port will remain in service
port mode indefinitely until power is cycled.
- If no service port connection is made during this interval, the terminals switch to
Modbus/RS-485 mode, and must be accessed using the RS-485 communication
settings configured in the transmitter.
• If you use any other connection type, you must configure ProLink II connection parameters to
match the transmitter’s configuration. If you do not know the transmitter’s configuration, you
can use a Communicator or the transmitter’s display to view or change its configuration.
- For all transmitters, if you are using HART protocol, you can specify the transmitter’s
HART tag (software tag) instead of the HART address, if a HART tag has been configured
in the transmitter.
- For all Series 1000/2000/3000 transmitters, see Table 2-15 for default values for each
connection type.
- For IFT97xx transmitters, communication parameters are not configurable. Settings are
listed in Table 2-16. Configure ProLink II connection parameters to match these settings.
- For RFT97xx transmitters, communication is configured using switches and jumpers on
the transmitter. Check your transmitter and refer to the transmitter manual to determine
your transmitter’s configuration, then configure ProLink II connection parameters to
match these settings. Factory default settings for these transmitters are listed in Table 2-16.
For a discussion of the advantages of each connection type, see Section 3.3.1.