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Siemens 6ES7742-2EC20-0BA1 — PLCs (Programmable Logic Controllers)

Siemens 6ES7742-2EC20-0BA1 SIMATIC S7 PG740 Programmer, Matu

MPN6ES7742-2EC20-0BA1

Siemens SIMATIC S7 programmer PG740 PIII, 13.3" XGA-TFT, PIII 800E, 128 MB RAM, 20 GB HD, STEP5 V7.15, STEP7 V5.1 SP1, MICRO/WIN V3.11 SP1, WIN NT V4 English.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Product details

The Siemens 6ES7742-2EC20-0BA1 is a SIMATIC S7 PG740 programming device, a field-service tool used to commission, diagnose, and maintain S7-300, S7-400, and S7-200 controllers on the factory floor. It ships with a 13.3-inch XGA-TFT display, a Pentium III 800E processor, 128 MB of RAM, a 20 GB hard drive, and pre-installed engineering software: STEP5 V7.15, STEP7 V5.1 SP1, and MICRO/WIN V3.11 SP1 running on Windows NT 4.0 English.

The PG740 is a laptop-class device, not a rack-mount controller — it connects to the CPU via the MPI/DP port for online programming and diagnostics. The pre-loaded software versions (STEP7 V5.1 SP1, STEP5 V7.15) tie this unit to legacy S7 projects; it will not run TIA Portal or support firmware updates for current S7-1200/1500 controllers without a full software upgrade.

Frequently asked questions

What is the closest alternative to 6ES7742-2EC20-0BA1?

There is no pin-compatible or direct drop-in replacement listed in the official lifecycle record. A modern equivalent would be a current SIMATIC Field PG (e.g., 6ES7710-xxxxx series) running TIA Portal, but that requires a project migration from STEP7 V5.x and Windows NT 4.0.

What compliance documentation is available for this part?

The evidence does not list specific RoHS, REACH, UL, or IEC certificates for this order code. As a mature-lifecycle product originally shipped with Windows NT 4.0, it predates many current regulatory declarations. We can check with our sourcing channel on a per-quote basis.

MPN
6ES7742-2EC20-0BA1