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LonRise Equipment Co. Ltd.

  • China,Shanghai ,Shanghai
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China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module
China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module

  1. China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module
  2. China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module
  3. China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module
  4. China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module
  5. China Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module

Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module

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Payment Terms T/T
Delivery Time 2-3 days
Product Name PLC Industrial Control
Part Number 6ES7421-7DH00-0AB0
Shipment DHL
Condition New
Lead Time 2-3 days
WQR12038HBL 1 year
Keywords 6ES7421-7DH00-0AB0
Brand Name Siemens
Model Number 6ES7421-7DH00-0AB0
Certification CE
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Delivery Time 2-3 days
Product Name PLC Industrial Control Part Number 6ES7421-7DH00-0AB0
Shipment DHL Condition New
Lead Time 2-3 days WQR12038HBL 1 year
Keywords 6ES7421-7DH00-0AB0 Brand Name Siemens
Model Number 6ES7421-7DH00-0AB0 Certification CE
Place of Origin China
High Light Siemens S7-400 digital input moduleSM 421 PLC control moduleSIMATIC S7-400 industrial input module
Sinamics 6ES7421-7DH00-0AB0 Overview
The 6ES7421-7DH00-0AB0 is an optically isolated digital input module (SM 421) for the SIMATIC S7-400 controller platform. It provides 16 individually isolated digital input channels supporting a wide voltage range of 24–60 V UC (AC/DC), making it suitable for connecting standard switches and two‑wire proximity sensors (BEROs). Featuring configurable input delay, diagnostic interrupts, and alarm functions, this module ensures reliable signal acquisition in harsh industrial environments. It integrates seamlessly into S7-400 systems for factory automation, process control, and machinery monitoring applications.








Figure 1 shows the front panel of 6ES7421-7DH00-0AB0.

























Quick Specs.

Table 1 shows the Quick Specs

Item Value
Type Digital Input Module, SM 421
Inputs 16 DI, individually isolated
Voltage 24–60 V UC (AC/DC)
Delay 0.5–20 ms
For SIMATIC S7-400








Detailed Specification
Parameter Detail
Order Number 6ES7421-7DH00-0AB0
Product Line SIMATIC S7-400
Input Type 16 x digital input, opto-isolated
Nominal Input Voltage 24 V to 60 V UC (AC/DC)
Input Current (ON) 4 mA typical
Input Delay 0.5 ms to 20 ms (adjustable)
Diagnostics Diagnostic interrupt, alarm function
Connection Screw/spring terminals
Dimensions W×D×H = 25 mm × 210 mm × 290 mm
Weight approx. 0.6 kg
Standards RoHS compliant



Company Details

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  • Business Type:

    Distributor/Wholesaler,Agent,Seller

  • Year Established:

    2007

  • Total Annual:

    2,000,000-4,000,000

  • Employee Number:

    30~50

  • Ecer Certification:

    Verified Supplier

The Formation of Lonrise   My Company was founded in 2007 as Cisco distributor and integrator domestically. After 4 years' steadfast development, it spotted the business abroad. Thus Lonrise stepped on the road as a global CISCO supplier which has owned a good reputation within ... The Formation of Lonrise   My Company was founded in 2007 as Cisco distributor and integrator domestically. After 4 years' steadfast development, it spotted the business abroad. Thus Lonrise stepped on the road as a global CISCO supplier which has owned a good reputation within ...

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  • LonRise Equipment Co. Ltd.
  • 26Minyi Road, Xinqiao, Songjiang Industrail Zone Shanghai China
  • https://www.opticaltransceiver-module.com/

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