ROTRONIC HF65 - Manual (Page 23)

E-M-HF63_65-V1_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroFlex HF63/HF65 Humidity Temperature
Transmitters: User Guide
Document title
Page 23 of 34
© 2008; Rotronic AG E-M-HF63_65-V1_11
c) RS-485 serial interface (multi-drop)
Instructions for using the HF65 with a RS-485 network are provided in the following manuals:
E-M-HW4v2-Main (§ 6.5), E-M-HW4v2-F2-008 and E-DV04-RS485.01.
Notes:
o
Instruments connected to the same RS-485 network must use the same baud rate and each instrument
must be given a unique RS-485 address
o
RS-485 Compatibility: The communications protocol used by the HF65 and other AirChip 3000 products
is not compatible with the protocol used by the previous generation of ROTRONIC products. Do not
connect legacy products and AirChip 3000 products to the same RS-485 multi-drop network.
The specifications of the RS-485 interface are as follows:
Baud rate : 19200
Parity : none
Data bits : 8
Stop bits : 1
7.4 Internal menu (optional keypad and display)
Note: Unauthorized access to the menu can be prevented by disabling the “display menu” setting
(use the HW4 software > Device Manager > Display)
Menu navigation keys + / - :
Change value up / down
ENTER key:
Menu item selection
MENU key:
Open / Close menu
Main Menu
Menu Items Selections / Information Notes
Settings
Unit °C / °F Temperature / dew or frost point
Record On / Off Data recording (max. 2000 values)
Back Light Key Press / On / Off Display backlight mode