HP41CV/Kern Surveying Instruments



#2

I am trying to construct a display showing the advancements made by the now defunct Swiss surveying firm Kern with electronic theodolites some time ago. I have an E2 electronic theodolite and EDM, and the DIF41 attachment which enables the theodolite to send data to and receive data from a HP41CV.

I can transfer data from the E2 into the HP41CV registers fine, but I cannot seem to transmit data from the HP41CV to the E2. The instructions in the manuals do not help. They simply refer to a "HP41 program on magnetic card" but to date I have been unable to locate such a program. And the only instructions given seem to be in BASIC language. They are
<STX>T172+45.2234<CR><LF><ETX>
where STX means start, T1 is the theodolite, 72 is a code number for horizontal circle orientation, 45.2234 the value of the horizontal bearing and LF and ETX are end of transmission protocols.

The manual also says that anything transmitted to the E2 from the HP41 must be in the X register.

If anyone has any knowledge of this, could they please contact me direct on wjlafferty@ozemail.com.au

thanks .....Bill Lafferty


Possibly Related Threads...
Thread Author Replies Views Last Post
  hp41cv memory modules tim peterson 10 894 11-07-2013, 11:09 PM
Last Post: Garth Wilson
  HP41CV Mike Powell 12 945 10-30-2013, 08:17 AM
Last Post: Mike Powell
  HP41CV Bry Sun 11 920 10-22-2013, 12:52 PM
Last Post: Geoff Quickfall
  Land surveying programs have nowhere to go JJB299 11 793 06-13-2013, 09:14 PM
Last Post: Egan Ford
  HP41cv expiriences of a new user Wolfgang 28 1,581 02-13-2013, 08:02 PM
Last Post: Mike Morrow
  A simple question about the HP41C or HP41CV Antoine M. Couëtte 6 549 12-16-2012, 04:06 AM
Last Post: Antoine M. Couëtte
  The next Texas Instruments graphing calculator ! Mic 10 715 11-16-2012, 08:47 PM
Last Post: bluesun08
  Problem with HP41CV Bruce Larrabee 19 1,272 09-18-2012, 09:29 AM
Last Post: Luiz C. Vieira (Brazil)
  Texas Instruments TI-83 Plus review robertoataulfo 82 3,087 04-02-2012, 05:32 PM
Last Post: Antonio Petri (UK)
  HP41CV drains battery. Schematics? Harald 15 1,004 03-18-2012, 09:22 PM
Last Post: Luiz C. Vieira (Brazil)

Forum Jump: