9 Configure digital communications
9.1 Configure HART communications
HART communications parameters support HART communications with the transmitter on a Bell 202 physical
layer (Channel A or an RS-485 physical layer (Channel E
9.1.1 Configure basic HART parameters
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>
Time/Date/Tag
ProLink III
Device Tools
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Configuration
>
Communications
>
Communications (HART)
Field Communicator
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Manual Setup
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HART
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Communications
Basic HART parameters include the HART address, HART tags, and the operation of the primary mA output.
Procedure
1. Set
HART Address
to a value that is unique on your network.
•
Default: 0
•
Range: 0 to 63
Tip
•
The default address is typically used unless you are a multidrop environment.
•
Devices using HART protocol to communicate with the transmitter may use either
HART Address
,
HART Tag
, or
HART Long Tag
to identify the transmitter. Configure any or all, as required by your
other HART devices.
2. Set
HART Tag
to a value that is unique on your network.
3. Set
HART Long Tag
to a value that is unique on your network.
HART Long Tag
is supported only by HART 7. If you are using HART 5, you cannot use
HART Long Tag
to communicate with the transmitter.
4. Ensure that
mA Output Action
is configured appropriately.
Option
Description
Enabled (Live)
The primary mA output reports process data as configured. This is the
appropriate setting for most applications.
Disabled (Fixed)
The primary mA output is fixed at 4 mA and does not report process data.
Important
If you use ProLink III to set
HART Address
to
0
, the program automatically enables
mA Output Action
.
If you use ProLink III to set
HART Address
to any other value, the program automatically disables
mA
Configuration and Use Manual
Configure digital communications
MMI-20025166
March 2019
Configuration and Use Manual
165