Vaisala HUMICAP HMT330 SERIES User Manual

User's Guide ______________________________________________________________________
146 _________________________________________________________________ M210566EN-J
Diagnostic MODBUS Counters
HMT330 has diagnostic counters that can be used to pinpoint MODBUS
problems. The counters are always active when the MODBUS protocol is
enabled.
Viewing Counters Using Display/Keypad
You can use the display/keypad option to view and clear the counters.
Enter the Main Menu and navigate to System ► Diagnostics
► MODBUS Counters.
1101-037
Figure 74 MODBUS Counters
Viewing Counters Using Service Port
Use the MODBUS command to view the counters:
MODBUS<cr>
Example:
>modbus
Bus messages : 0
Bus comm. error: 0
Bus exceptions : 0
Slave messages : 0
Slave no resp. : 0
Last message :
>
In addition to the diagnostic counters, the last message (received or
transmitted) is shown in hexadecimal format. If the last message was a
broadcast message, the suppressed response message is shown.
The last message displayed may be incomplete if there is active
MODBUS traffic while using the MODBUS command.

Vaisala HUMICAP HMT330 SERIES Specifications

General

Humidity Measurement Range	0 ... 100 %RH
Protection Class	IP65
Measurement Parameters	Relative Humidity, Temperature
Temperature Measurement Range	-40 to +60 °C
Humidity Accuracy	±1 %RH (0 ... 90 %RH) ±1.7 %RH (90 ... 100 %RH)
Temperature Accuracy	±0.2 °C
Humidity Sensor	HUMICAP®
Output Signals	Analog
Power Supply	10...35 VDC
Operating Temperature Range	-40 to +60 °C