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Siemens 6ES7323-1BH01-0AA0 — Digital Output Modules

Siemens 6ES7323-1BH01-0AA0 SM323, 8 DI / 8 DO, 24 VDC, 0.5 A

MPN6ES7323-1BH01-0AA0
End of Life

Siemens SM323, 6ES7323-1BH01-0AA0, digital I/O module for S7-300, 8 inputs / 8 outputs, 24 VDC, 0.5 A per output, 120 x 40 x 125 mm.

$177.80 – $275.00Ref. price · indicative, final on quote
Siemens 6ES7323-1BH01-0AA0 datasheet (PDF)
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

6ES7323-1BH01-0AA0 — Outputs
ParameterValue
Digital outputs8
6ES7323-1BH01-0AA0 — Electrical
ParameterValue
Rated value (DC)24 V
Output current, resistive load, max.100 Hz
Output current at signal "1" (rated)0.5 A
Output current, max. per circuit / per module0.6 A
Permissible range, upper limit (DC)28.8 V
Permissible range, lower limit (DC)20.4 V
Output voltage at signal "1" (min.)L+ (-0.8 V)
Residual current at signal "0", max.0.5 mA
Output current up to 60 °C, max.4 A
Current consumption from backplane bus (5 V DC), max.40 mA
Power dissipation (typ.)3.5 W
Inductive shutdown voltage clampL+ (-53 V)
Load resistance, upper limit4 kΩ
Load resistance, lower limit48 Ω
Isolation between channelsYes
Isolation between channels and backplane busYes; Optocoupler
Isolation, channels in groups of8
Isolation test voltage500 V DC
6ES7323-1BH01-0AA0 — Protection & Diagnostics
ParameterValue
Short-circuit protectionYes
Diagnostics functionNo
Short-circuit response threshold (typ.)1 A
Redundant load controlYes; only outputs of the same group
Output can drive a digital inputYes
6ES7323-1BH01-0AA0 — Performance
ParameterValue
Output switching delay 0 to 1, max.100 µs
Output switching delay 1 to 0, max.500 µs
Switching frequency, inductive load, max.0.5 Hz
Switching frequency, lamp load, max.10 Hz
6ES7323-1BH01-0AA0 — Mechanical & Connection
ParameterValue
Cable length, unshielded, max.600 m
Cable length, shielded, max.1 000 m
Width40 mm
Height125 mm
Depth120 mm
Weight (approx.)220 g

Product details

8 DI / 8 DO mix, 24 VDC, 0.5 A per output

The Siemens 6ES7323-1BH01-0AA0 SM323 packs eight 24 VDC digital inputs and eight digital outputs in a single 40 mm-wide module for the S7-300 rack. Each output is rated 0.5 A continuous, and the group can deliver 4 A up to 60 °C without derating — so a full bank of eight outputs at 0.5 A each stays within the thermal budget.

Switching speeds and load limits

Resistive-load switching runs at 100 Hz max; inductive loads drop to 0.5 Hz. The output turns on in 100 µs and off in 500 µs (hardware response), but the input filter adds 1.2–4.8 ms of debounce on both edges — account for that in your cycle-time budget. Short-circuit protection is built in, with a typical response threshold of 1 A. The module draws 3.5 W typical power loss, and isolation is tested at 500 V DC between the channels and the backplane.

Frequently asked questions

What is the replacement for 6ES7323-1BH01-0AA0?

Siemens has not published a direct drop-in successor for this order code. For new designs, consider the current SM323 variant or a separate DI/DO combination module that matches your I/O count and voltage. Confirm the backplane compatibility and wiring before substituting.

Is 6ES7323-1BH01-0AA0 compatible with S7-300?

Yes, this module is designed for the S7-300 rack. It plugs into any standard S7-300 backplane slot and uses the 20-pin front connector for field wiring.

MPN
6ES7323-1BH01-0AA0