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Manual Supplement
00809-0500-4530, Rev AA
October 2010
Rosemount 5300/5400 Series
1-22
ALARM HANDLING NOTE
If the Modbus communication setup has been changed, but the transmitter
has not yet started to use the new configuration, then you need to 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.
The Modbus communication settings will otherwise be lost if you write a new
message to the transmitter.
The output from the Modbus transmitter in case of an error (such as a field
device malfunction) can be configured. The values for Modbus registers
corresponding to PV, SV, TV, and QV will be changed accordingly (applicable
registers in area 1300, 2000, 2100, and 2200).
The default alarm output value for each protocol is defined on the next page.
Configuring alarm output value is optional.
Use the Modbus string to configure the alarm output. To enter a Modbus string
in RRM, do the following (Modbus RTU shown):
1. Start RRM and connect to the transmitter.
2. In RRM, select Setup>General.
Modbus Setup