Power Measurement – Scientific Wordprocessing for MacOSX

/Power Measurement – Scientific Wordprocessing for MacOSX
Power Measurement – Scientific Wordprocessing for MacOSX2018-08-01T13:39:50+00:00

Project Description

The HM8115-2 is a programmable 8kW Power-Meter supplied by HAMEG Instruments.

 In order to integrate this meter into a Unix based infrastructure (computer controlled experiments and measurements) an ethernet interface would be desirable.

We make use of the following ethernet to serial adaptor (WIZ110SR) offered by WIZnet.

figure1040166

This adaptor comes with a config program that allows to set the IP-Address and serial parameters. Unfortunately the WIZnet config tool is available for Windows only. We use VirtualBox to virtualize a WinXP instance under MacOSX and set the parameters as follows.
We open a TCP socket to 192.168.1.9 (configured IP-Address) and port 5000 and send the ASCII command *IDN? followed by <CR>. The device replies with HAMEG HM8115-2!
All that is left to do now is to somehow mount the WIZnet board plus a power supply into the HAMEG case. We turn around the serial interface and solder three wires to the SUB-D pads 2, 3 and 5.

 

figure1040168

We solder a three wire interface together 

  • PIN2 —– PIN2
  • PIN3 —– PIN3
  • PIN5 —– PIN5

and give it a first shot.

figure1040170

 

All that is left to do now is to somehow mount the WIZnet board plus a power supply into the HAMEG case. We turn around the serial interface and solder three wires to the SUB-D pads 2, 3 and 5.

figure1040172

We get back to our MacOSX machine in the office and write a little Objective-C application that establishes a TCP connection to the WIZnet board sends commands and displays responses.

figure1040176

This works like a charm. The wattage can easily be extracted from the returned string. The HAMEG can now be remote controlled and easily integrated into computer controlled experiments.

figure1040177

 

 

source : http://www.advanced-science.com/HAMEGEthernetInterface.html

Tags : W5100, WIZ110SR

Author : Advanced-Science

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