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Rosemount 5300 Series with HART® to Modbus® Converter
May 2016
Reference Manual
00809-0100-4530, Rev DD
396
Rosemount 5300 Series with HART® to Modbus® Converter
Note
After changing the Alarm Output configuration, disconnect the HART modem and wait up
to 60 seconds for the change to take effect.
In case the MA/MB terminals are used for connection to the HMC, disconnect the RS-485
Converter, cycle power to the transmitter, and wait up to 60 seconds for the change to take
effect.
J.9.1
Verify alarm output
To verify the Alarm Output, use RRM to simulate a device failure:
1.
Establish HART communication with the transmitter through RRM.
2.
Select
Simulation Mode
in the
Tools
menu.
3.
Click
Enable Device Failure Alarm (simulated)
.
4.
Click the
Start
button.
5.
Disconnect HART modem.
6.
Verify that the configured alarm output is available in the Modbus host.
7.
Use RRM to turn off simulation mode.
J.9.2
Use status information to evaluate measurement validity
The transmitter updates status information about the current measurement, and this status
information is available as a bitfield register through Modbus communication.
By monitoring the status information it is possible to determine if the current measurement
output value is valid. See
“Common Modbus host configuration” on page 397
for details
about the individual status bits.
J.9.3
Use Heartbeat to detect errors
By reading and evaluating the Heartbeat value from the device, it is possible to verify that
the communication link between the transmitter, HMC, RTU and even the control system
communicating with the RTU is working.
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