Tip
If you set
Trigger Interval
to 0, HART Command 119 is broadcast as soon as the alert is detected.
4. Set
Retry Rate
as desired.
Retry Rate
controls the rate at which HART Command 119 is broadcast when event notification is
active.
•
Default: 0.5 seconds
5. Set
Maximum Update Time
as desired.
Maximum Update Time
controls the rate at which HART Command 119 is broadcast when event
notification is not active.
•
Default: 60 seconds
9.2 Configure Modbus communications
Display
Menu
>
Configuration
>
Inputs/Outputs
>
Channel E
ProLink III
Device Tools
>
Configuration
>
Communications
>
Communications (Modbus)
Field Communicator
Configure
>
Manual Setup
>
Inputs/Outputs
>
Channel E
>
Set Up RS-485 Port
Modbus communications parameters control Modbus communications with the transmitter.
Modbus support is implemented on the RS-485 physical layer via Channel E.
Important
Your device automatically accepts all connection requests within the following ranges:
•
Protocol: Modbus RTU (8-bit) or Modbus ASCII (7-bit) unless
Modbus ASCII Support
is disabled
•
Parity: odd or even
•
Stop bits: 1 or 2
•
Baud: 1200, 2400, 4800, 9600, 19200, 38400
You do not need to configure these communications parameters on the device.
Restriction
If you need to configure all Modbus parameters, you must use ProLink III. The display does not provide access
to
Modbus ASCII Support
or
Additional Communications Response Delay
. The Field Communicator
provides access only to
Modbus Address
.
Procedure
1. Enable or disable
Modbus ASCII Support
as desired.
The setting of this parameter controls the range of valid Modbus addresses for your device.
Modbus ASCII support
Available Modbus addresses
Disabled
1–127
Configuration and Use Manual
Configure digital communications
MMI-20025166
March 2019
Configuration and Use Manual
171