Siemens 6FM1470-3CA20 | WF 470B Display Module for S5 PLC

High-Performance Visual Interface for SIMATIC S5 Systems

The 6FM1470-3CA20 display module, known as the WF 470B, provides a powerful graphical user interface for SIMATIC S5 automation systems . This module features a 5-inch CRT display and operates as a single-board computer within the S5 rack, independent of the main CPU . It offers a comprehensive solution for machine diagnostics, production monitoring, and operator guidance in complex industrial applications.

Technical Specifications

Parameter	Specification
Manufacturer	Siemens
Product Series	SIMATIC S5 / WF 470
Model	6FM1470-3CA20
Module Designation	WF 470B
Display Technology	CRT (5 inches)
Resolution	640 x 480 pixels
Processor	8088 CPU
Memory	64 KB RAM, 128 KB EPROM
Interfaces	TTY, RS232, V.24, 20mA
Power Supply	5 V DC (via backplane)
Current Consumption	1.5 A (5 V DC)
Power Dissipation	7.5 W
Weight	2.5 kg
Operating Temperature	0°C to 45°C
Dimensions	3.0 x 26.0 x 20.0 cm
Product Status	Discontinued (EOSR: 2002-02-20)
Certifications	CE, UL, CSA

Display Features and User Interface

The 6FM1470-3CA20 utilizes a 5-inch CRT display with 640 x 480 pixel resolution for clear image presentation. This module provides extensive graphic capabilities for visualizing process data, machine status, and alarm messages . It includes 8 function keys and 4 operating keys for convenient operator interaction. Furthermore, a slot for a memory submodule allows users to store application-specific graphics and text. Consequently, operators gain intuitive control and monitoring of complex processes.

System Integration and Autonomy

This display module operates as an independent single-board computer within the S5 rack. It functions independently of the CPU, relieving the PLC of graphics processing and increasing overall system performance . The 6FM1470-3CA20 integrates with S5 controllers via TTY or RS232 interfaces. Therefore, users can configure this module for a wide range of HMI tasks. The module also supports a variety of process visualization tasks.

Physical Characteristics and Installation

Weighing 2.5 kg, this display module fits standard S5 rack configurations . It occupies one slot within the S5 chassis. The module’s front panel provides clear labeling for its keys and indicators. Users can install this module in existing S5 systems without requiring additional software licenses.

Product Status and Legacy Support

Siemens discontinued the 6FM1470-3CA20 effective February 20, 2002 . Despite its legacy status, users may still source this module through industrial automation distributors offering new old stock or refurbished units.