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User's Guide ______________________________________________________________________
200 _________________________________________________________________ M210566EN-J
Configuration flags are used to select some basic options of the
instrument and to manually start the sensor operations.
Table 41 Configuration Flag Registers
Name Address Description
Standard filtering on/off 1281 1 = Filtering on
Extended filtering on/off 1282 1 = Extended filtering on
Automatic chemical purge on/off 1283 1 = Automatic purge on.
See configuration register
0773…0774 (1027).
Start-up chemical purge on/off 1284 1 = Start-up purge on
Chemical purge in progress 1285 1 = Purge in progress
(write 1 for manual start)
Sensor heating on/off 1287 1 = Sensor heating on
(optional feature)
Flags 1281 and 1282 are mutually exclusive.
Some of the configuration registers might not have an effect depending
on the instrument model and configuration.
Other configuration settings are not usually needed and are not available
using the MODBUS interface. The service cable must be used to change
other configuration settings if needed.
Exception Status Outputs
Exception status outputs (read with function code 07) tell the summary of
the HMT330 transmitter status as described in Table 42 below.
Table 42 HMT330 Exception Status Outputs
Output Name Description
0 (0x01) Fault status 1 = No errors
1 (0x02) Online status 1 = Online data available
Status information is available also with register access; see section
Status Registers (Read-Only) on page 199.
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