ROTRONIC HM4 - Manual (Page 11)

E-M-HM4-V0_08
ROTRONIC AG
Bassersdorf, Switzerland
Document Code Unit
HM4 Humidity and Temperature Probe with
Heated Sensor
Instruction Manual
Document Type
Page 11 of 41
Document Title
© 2014; ROTRONIC AG E-M-HM4-V0_08
3.5 RS-485 Interface
The RS-485 interface is used to connect the HM4 to a PC. A PC running the HW4 software (Professional
version) offers the following functions:
Recording and display of current measured and calculated values
Configuration of the probe
Calibration and adjustment of the probe
Depending on the type of probe connection (Tuchel connector / open ends), different accessories are needed
to connect the HM4 to a PC.
Tuchel connector:
HM4 probes with Tuchel connector are connected with AC3010-T (RS-485-to-USB adapter). The
device can then be found and integrated using the HW4 software:
Devices & Groups > RS485 > Search for Devices connected via AC3010 adapter
Open ends:
HM4 probes with open cable ends require AC3010 (RS-485-to-USB adapter) or AC3011 (RS-485-to-
Ethernet adapter). Both adapters allow a RS-485 network with up to 64 probes. The device can then
be found and integrated using the HW4 software:
Devices & Groups > RS485 > Search for Devices connected via AC3010 adapter
Devices and Groups > RS485 > Search for Devices connected via AC3011 adapter
See the manual E-M-HW4v3-Main, points 6.4, 7.5 and 11.2.2, for detailed information on building RS-485
networks and integrating HM4 probes in the HW4 software. Accessories such as AC3010 and AC3011 are
described in the manual E-M-HC2-accessories.
DRAFT