Skip to main content
Log in
Siemens 6ES7374-2XH01-0AA0 — PLC I/O & Expansion Modules

Siemens 6ES7374-2XH01-0AA0 SM 374 Simulator, EOL, 16 I/O

MPN6ES7374-2XH01-0AA0
End of Life

Siemens SIMATIC S7-300 SM 374 simulator module, 6ES7374-2XH01-0AA0, 16 switches and 16 LEDs for simulating 16 inputs or 16 outputs or 8 inputs and 8 outputs, end-of-life (hot).

$471.17 – $534.00Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

6ES7374-2XH01-0AA0 — I/O
ParameterValue
Digital inputs16; Switch
Digital outputs16; LEDs
Analog inputs0
6ES7374-2XH01-0AA0 — Electrical
ParameterValue
Power loss (typ.)0.35 W
Current consumption from backplane bus (5 V DC), max.80 mA
Isolation: channels to backplane busNo
6ES7374-2XH01-0AA0 — Mechanical
ParameterValue
Height125 mm
Width40 mm
Depth120 mm
Weight (approx.)190 g
6ES7374-2XH01-0AA0 — Other specifications
ParameterValue
Number of analog outputs0

Product details

What the SM 374 does that a real I/O module can't

The Siemens 6ES7374-2XH01-0AA0 is a simulator module for the S7-300 rack — it lets you test logic without wiring field devices. You configure it via DIP switches (16 of them) to act as 16 digital inputs, or 16 digital outputs, or 8 inputs plus 8 outputs; the 16 LEDs show the state of whichever channels you're using. It draws 80 mA from the 5 V DC backplane bus, so it loads the rack power supply about the same as a compact I/O slice, and dissipates only 0.35 W — no extra heat to manage in the enclosure.

Frequently asked questions

What is the replacement for Siemens 6ES7374-2XH01-0AA0?

Siemens has not listed a direct replacement for this simulator module. For testing S7-300 logic, you would need to adapt the test setup to use a standard digital I/O module (e.g., SM 321 or SM 322) with field wiring or a test harness. The SM 374's unique value is the built-in switches and LEDs — no standard I/O slice provides that.

How does the SM 374 simulate inputs and outputs?

The module has 16 DIP switches and 16 LEDs. You set the DIP switches to choose the mode: 16 inputs, 16 outputs, or 8 inputs plus 8 outputs. In input mode, the switches act as field signals to the CPU; in output mode, the LEDs follow the CPU's output image. This lets you verify logic without connecting any external wiring.

MPN
6ES7374-2XH01-0AA0