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enter image description here

I apologize in advance, if this isn't the right place to ask this. I want to find out, what kind of electronic device this is. The tape recorder is just on top of it, but I am talking about the device beneath it. It is integrated into a metal suitcase, it is manufactured by Siemens, and the keyboard doesn't have letters on it, but instead has weird combinations of letters on it, like OMN, OA etc.

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  • \$\begingroup\$ IT'S A BOMB!!! RUN!!! :) \$\endgroup\$ – Majenko Nov 1 '14 at 23:08
  • \$\begingroup\$ I didn't know Siemens manufactured explosives ;) \$\endgroup\$ – Andreas Hartmann Nov 1 '14 at 23:09
  • \$\begingroup\$ Looks like an old assembler :) \$\endgroup\$ – klcjr89 Nov 1 '14 at 23:12
  • \$\begingroup\$ Closeup of keyboard and other legends may help, e.g. around the keyswitch on the left. (And is there a model number next to "Siemens"? And whatever you do, don't cut the blue wire. \$\endgroup\$ – user_1818839 Nov 1 '14 at 23:17
  • \$\begingroup\$ You mean red wire...? \$\endgroup\$ – Majenko Nov 1 '14 at 23:18
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May be an old plc programmer. The text of the three positions of the key may help to discover. Also the identification of the sub-D connectors. Could you tell us?


It seems to be a PLC programmer from the age of no-pc-at-home. The PLCs had very little RAM (a few Kbs) and only proprietary interfaces. I have never seen a programmer that big, just handheld devices. In fact, nowadays Siemens programmers are pc-based devices but still called suitcases.

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  • \$\begingroup\$ I have just zoomed in to the key switch on the image. I can make out 2 of the three words. They're in German: "auslesen" (select), "einlesen" (read in), and the third position looks like "text <something> halt". \$\endgroup\$ – Majenko Nov 1 '14 at 23:20
  • \$\begingroup\$ The key positions say: "Auslesen" "Einlesen" "Test bei Halt" which means: read, write, test on hold/test at hold \$\endgroup\$ – Andreas Hartmann Nov 1 '14 at 23:21
  • \$\begingroup\$ The Round connectors on the right say SS and MB, the parallel port beneath says DR \$\endgroup\$ – Andreas Hartmann Nov 1 '14 at 23:22
  • \$\begingroup\$ The LEDs next to the screen are saying: STAT, VKE, Betrieb (Operation) \$\endgroup\$ – Andreas Hartmann Nov 1 '14 at 23:23
  • \$\begingroup\$ Are there any key on the keyboard that says U, A, O, SP, SPN, E? Those are common Siemens plc commands. Any ref to S5 model? \$\endgroup\$ – Julian Maza Nov 1 '14 at 23:33

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