Vaisala HUMICAP HMT330 SERIES Guia do Utilizador descarregar pdf (Página 202)

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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