Telemecanique TSX 17 is a legacy PLC primarily programmed using the software packages. These are

Your original program uses memory overlays or an extended memory manager (EMM386). In DOSBox or a VM, you need to adjust the memory configuration. Old PL707 uses "Conventional Memory" (first 640KB). Load HIMEM.SYS and EMM386.EXE with the RAM parameter.

Schneider Electric (who acquired Telemecanique) has discontinued this software.

It is no longer sold or supported through official channels. You generally have to look for legacy automation software archives or forums (like PLCS.net) to find copies of PL7-2 on floppy disk images.

Overview

Hardware upgrade

| Option | Description | |--------|-------------| | | Replace TSX 17 with a modern Schneider Electric PLC: Modicon M221 , M241 , or M251 series (programmed with EcoStruxure Machine Expert – Basic or IEC version). | | Emulation / VM | Run MS‑DOS 6.22 in a virtual machine (e.g., DOSBox, VirtualBox, VMware) with a USB‑to‑RS232 adapter passed through – but success varies due to strict serial timing. | | Third‑party conversion | Some industrial automation service companies offer ladder logic conversion from TSX 17 format to modern Schneider (or Siemens) code. | | Clone software | No known legal clone or open‑source alternative exists. |

  • Step boxes (S0, S1, etc.)
  • Transitions with logic conditions.
  • Simultaneous branching and alternative branching.
telemecanique tsx 17 programming software