S5, PLC, Siemens, IBH Softec, Upgrade, Conversion

Siemens S5 PLC Software

On this page, you will find information about different options for Siemens S5 PLC software, the operating system required, and the latest version available. Note: the links below are subject to change. If there is a problem with one or more of the links, please fill out our contact form at the bottom of this page.

S5 PLC Software from Siemens

STEP 5 V7.23

Part#: 6ES5894-0MA24

Operating system:
DOS 5.x, Windows 3.11, Windows 95/98/ME/NT/2000/XP
(not for Windows Vista/7 or higher!)

Download Cable Part#:
6ES5-734-1BD20 (for the majority of S5 CPUs with TTY (20mA current loop) DB15 port.
Essentially this cable is an RS-232 to 20mA current loop converter.


Service Pack 2 for STEP 5 V7.15 and higher (also suitable for STEP 5 V7.2)
Update of STEP 5 V7.2x to V7.23 for PG7xx and PCs
Hotfix 1 for STEP 5 V7.23
Other STEP 5 Downloads

S5 PLC Software from IBH Softec

S5 for Windows Version 7

Part#: 10018

Operating system: Windows XP/Vista/7/8/10 (32-bit & 64-bit)

Download Cable Part#:
20284 IBH Link S5++ (for Ethernet connection from your PC)
20220 IBH USB-S5-Adapter (for USB connection from your PC)
2020 IBH S5-Current loop converter (for serial connection from your PC)


S5 for Windows ® Version 7 Product Page
Download S5/S7 for Windows


Although you can still buy software to maintain your S5 PLCs, these PLCs are now discontinued. The easiest migration forward is the Siemens S7 PLC, but it could also be upgraded to the controller of your choice. Be advised, that more than likely your HMI will also need migration or upgrading as well to communicate to your new PLC.

Contact us for a free consultation for upgrading your S5 PLC.

    Fill out the form below, or call us by phone at one of the numbers at the very bottom of this page.