Micro Motion RFT9709 Manuál s instrukcemi stáhnout pdf (Strana 20)

Using ProLink

Software with Micro Motion

Transmitters

Getting Started

continued

Communication standards

2.2 Communication standards

Switches and jumpers on the transmitter determine the communication

standard used by the transmitter. Micro Motion configures each

transmitter's default communication settings at the factory.

Depending on the transmitter model, transmitters can communicate

using HART and/or Modbus

protocol, using the Bell 202 or RS-485

standard. Communication configuration for the ProLink program and

transmitter must be the same.

Factory-default settings

The factory default settings for Version 3 RFT9739 transmitters are:

• HART protocol over the Bell 202 standard at 1200 baud, 1 stop bit,

odd parity

• Modbus protocol over the RS-485 standard at 9600 baud, 1 stop bit,

odd parity

The factory default settings for the IFT9701, IFT9703, RFT9712, and

RFT9729 are: HART protocol over the Bell 202 standard at 1200 baud, 1

stop bit, odd parity.

User configuration

Transmitter models RFT9739, RFT9712, and RFT9729 can be

reconfigured for user-defined communication settings using switches

and jumpers on the transmitter. To establish a user-defined

communication configuration, see the transmitter instruction manual.

HART

and Modbus

communication

The primary variable milliamp output on the RFT9739, and the 4-20 mA

output on the IFT9701, IFT9703, RFT9712, and RFT9729 can produce

HART-compatible signals for Bell 202 communication.

Micro Motion transmitters can function as part of a Bell 202 or RS-485

multidrop network.

• The RFT9739 can use the Bell 202 or RS-485 standard under HART

protocol, or the RS-485 standard under Modbus protocol.

• The IFT9701 and IFT9703 can use the Bell 202 standard under

HART protocol only.

• The RFT9712 and RFT9729 can use the Bell 202 or RS-485

standard under HART protocol only.

Up to 15 transmitters can participate with other devices in a Bell 202

multidrop network. Each transmitter must have a unique polling address

of 1 to 15, or a unique tag name.

Up to 32 transmitters can participate in an RS-485 multidrop network.

Each transmitter must have a unique tag name; up to 15 transmitters

may have unique polling addresses from 1 to 15. The IFT9701 and

IFT9703 cannot communicate in an RS-485 network.

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