Product details
Specifications
Recommand
Service & Policy

PRODUCT DETAILS SIEMENS

ARTICLE NUMBER

6ES7321-1BL00-0AA0

NEW ORIGINAL

PRODUCT IDENTITY

SIMATIC S7-300 Digital Input Module

Designed for high-density controller cabinets, this signal module consolidates field-status acquisition while retaining clear channel indication, grouped isolation and established S7-300 service practices.

WARRANTY

One year

AVAILABILITY

In stock

TEL

+86 17359287459

sales9@apterpower.com

TECHNICAL PROFILE FIRMWARE · CONFIGURATION

DIGITAL INPUTS 32	RATED INPUT 24 V DC	CHANNEL GROUP 16 channels	CONNECTOR 1 × 40-pole
INPUT DELAY 1.2–4.8 ms	TWO-WIRE SENSOR Supported	SHIELDED CABLE 1000 m max.	DIAGNOSTICS None

FIRMWARE & UPDATES

This signal module has no separately loadable user firmware; maintain the validated S7-300 station and STEP 7 project baseline.

Compare the installed hardware revision and exact order number with Siemens documentation before replacement.

Record the slot, address range and front-connector assignment before removing the existing module.

CONFIGURATION & PROGRAMMING

Select the matching SM 321 thirty-two-channel article number in the STEP 7 hardware configuration.

Assign the complete input byte range and preserve the grouped common wiring at the forty-pole front connector.

Verify all field states and channel LEDs during recommissioning; use program-level plausibility checks because the module provides no diagnostic alarms.

BRAND & APPLICATIONS

BRAND CHARACTERISTICS	APPLICATION FIELDS
◆ The S7-300 signal-module family supports modular expansion with well-defined slot and connector conventions.	◆ High-density switch and sensor acquisition in machine-control cabinets.
◆ High-density input packaging reduces cabinet footprint for large groups of 24 V DC sensors.	◆ Production lines, material handling and assembly systems using S7-300 controllers.
◆ Grouped optical isolation supports structured separation from the controller backplane.	◆ Utility and process panels requiring many 24 V DC status inputs.
◆ Siemens data sheets define the electrical, connector and addressing limits needed for exact replacement.	◆ Retrofit and spare-part work where the existing forty-pole wiring and address map must be retained.

RECOMMENDED MODELS

Siemens

6ES7321-1FF01-0AA0	6ES7322-1BH01-0AA0	6ES7132-6BF00-0CA0	6ES7122-1BB10-0AA0
6ES7288-2DR16-0AA0	6ES5463-4UA12	6ES7222-1HF22-0XA8	6ES7288-5AE01-0AA0
6ES7131-6BH00-0BA0	6ES7321-1BL00-0AA0	6ES7321-1BH02-0AA0	6ES7322-1BL00-0AA0
6ES7131-6BH01-0BA0	6ES7132-6BF01-0CA0	6ES7288-1ST60-0AA0	6ES7288-1SR60-0AA0
6ES7223-1BH22-0XA8	6ES7953-8LF31-0AA0	6ES7331-7KF02-0AB0	6ES7332-5HD01-0AB0

Weidmüller

UR20-FBC-PN-IRT-V2	UR20-FBC-PB-DP-V2	UR20-FBC-EIP	UR20-FBC-MOD-TCP
UR20-16DI-P	UR20-16DO-P	UR20-8DI-P-3W	UR20-8DO-P
UR20-4DI-P	UR20-4DO-P	UR20-4AI-UI-16	UR20-4AO-UI-16
UR20-4AI-RTD-DIAG	UR20-4AI-TC-DIAG	UR20-PF-I	UR20-PF-O
UR20-EBK	UR20-1COM-RS232-485-422	UR20-2CNT-100	UR20-4DI-4DO-P

QUOTE & SERVICE POLICY

01 · IDENTIFY
Send the complete article number and required quantity.

02 · VERIFY
Confirm the installed revision, voltage and connector.

03 · QUOTE
Request price, condition and available stock.

04 · DISPATCH
Confirm packing requirements and shipment details.

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Siemens S7-300 Datasheet Module

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