Siemens 8SX8504-0AF00 | SINUMERIK Digital Input Module

Technical Overview of the Input Module

The Siemens 8SX8504-0AF00 serves as a digital input module for the SINUMERIK CNC control family. This module acquires discrete signals from machine tools and peripheral devices. It converts these signals into digital data for the CNC processor. The module supports 24V DC inputs with comprehensive isolation.

Key Technical Specifications

This section details the precise parameters for the Siemens 8SX8504-0AF00 input module. Refer to these figures when planning your CNC integration.

Parameter	Specification
Part Number	8SX8504-0AF00
Type	Digital Input Module
Product Family	SINUMERIK
Number of Inputs	16 Digital Inputs
Input Voltage	24V DC
Input Current	Approx. 8 mA per channel
Isolation	Galvanic isolation between channels and backplane
Dimensions (W x H x D)	Approx. 250 x 40 x 180 mm
Weight	Approx. 0.9 kg
Compatibility	SINUMERIK 810, 820, and 850 CNC systems

Application and System Integration

This input module connects directly to the SINUMERIK backplane bus. It reads signals from limit switches, pushbuttons, and proximity sensors on machine tools. The Siemens 8SX8504-0AF00 transmits this data to the CNC for processing. Each channel includes an LED indicator for visual status monitoring. Consequently, operators can quickly diagnose field wiring issues.

Reliability and Performance Characteristics

The galvanic isolation protects the CNC system from electrical noise. This feature ensures stable operation in machine shop environments. The module’s robust construction withstands vibration and temperature fluctuations. Engineers rely on the Siemens 8SX8504-0AF00 for its proven performance in metal-cutting applications.