The Siemens 6ES7742-2AC20-0BA0 is a SIMATIC PG programmer, model PG740, built around a Pentium III 800E processor with 128 MB RAM and a 20 GB hard drive. It comes with a 13.3" XGA-TFT display and is preloaded with STEP5 V7.15, STEP7 V5.1 SP1, and Micro/WIN V3.11 SP1 on Windows 98 SE English. This is a field-service programming device for legacy SIMATIC S5 and S7-300/400 controllers, not a general-purpose PLC or expansion module.
Siemens 6ES7742-2AC20-0BA0 SIMATIC PG Programmer, Mature Lif
MPN6ES7742-2AC20-0BA0
Siemens SIMATIC PG, Programmer PG740 PIII, 13.3" XGA-TFT, PIII 800E, 128 MB RAM, 20 GB HD, preloaded with STEP5 V7.15, STEP7 V5.1 SP1, Micro/WIN V3.11 SP1, Win98 SE English.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 6.80 kgs |
Product details
Frequently asked questions
What replaces the 6ES7742-2AC20-0BA0?
No official successor order code is listed. A modern equivalent would be a current SIMATIC Field PG (e.g., 6ES7714-xxxx) or a standard laptop with Siemens TIA Portal software, but those are not form-fit-function drop-ins.
Can the 6ES7742-2AC20-0BA0 replace a 6ES7414-2XJ01-0AB0 in a panel?
No. The 6ES7414-2XJ01-0AB0 is a S7-400 CPU rack module; the 6ES7742-2AC20-0BA0 is a portable programmer. They have different mounting, connectors, and purpose.
What software is preloaded on this programmer?
It ships with STEP5 V7.15, STEP7 V5.1 SP1, and Micro/WIN V3.11 SP1 on Windows 98 SE English, as per the description.
MPN
6ES7742-2AC20-0BA0