ROTRONIC HF65 - Manual (Page 22)

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 22 of 34
© 2008; Rotronic AG E-M-HF63_65-V1_11
In the situation where the external device uses an internal pull-up resistor the value of this resistor should
meet the requirements shown below. It is also necessary to add a pull-down resistor RL connected to ground
in order to be able to read 100% of the range of the HF63 voltage output.
R Pull-up
RL
GND
VCC
Voltage Output
HF63
HF63 signal VCC R pull-up RL
0…1V 3.3V ≥ 250 kOhm 1 kOhm
HF63 signal VCC R pull-up RL
0…1V 5.0V ≥ 400 kOhm 1 kOhm
0…5V 5.0V ≥ 400 kOhm 5 kOhm
HF63 signal VCC R pull-up RL
0…1V 10.0V ≥ 1 MOhm 1 kOhm
0…5V 10.0V ≥ 1 MOhm 5 kOhm
0…10V 10.0V ≥ 1 MOhm 10 kOhm
7.2 HF63 transmitters (analog outputs)
If so desired use the HW4 software to configure the HF6. Complete the mechanical and electrical installation
and simply power up the HF6.
7.3 HF65 (digital output)
Configuration and full access to all HF65 functions requires a PC with the ROTRONIC HW4 software installed.
Starting with firmware version 1.3, the HF65 offers several communication protocol options that allow users to
read the measurement data without the HW4 software. When using the standard RO-ASCII protocol, access
to some of the HF65 functions is also possible without HW4. For details, see document E-M-AC3000-CP.
IMPORTANT: Depending on the type of digital interface, either the PC or the HF45 must be configured
by the user as indicated below.
a) USB network connection
Prior to connecting the HF65 to a USB port you must install the ROTRONIC USB driver on the HW4 PC. For
instructions see the HW4 manual E-M-HW4v2-Main (§ 6.3)
b) Ethernet (TCP/IP) network connection (wired or wireless)
Prior to connecting the HF65 to an active Ethernet network you must configure the HF65 TCP/IP settings. For
instructions see the HW4 manual E-M-HW4v2-Main (§ 6.4) and technical note E-M-TCPIP-Conf
WARNING: Connecting a device to an active Ethernet network can disrupt communications on the network.
Before connecting the HF65, make sure that it is properly configured for your network