Siemens 6ES5090-8ME11 Interface Module

The Siemens 6ES5090-8ME11 interface module connects SIMATIC S5 controllers to external operator panels. This module handles data exchange between the CPU and text displays. It mounts directly onto the S5 CPU front panel using two screws. You can use this module as a direct replacement for failed interface units.

Detailed Technical Specifications

The Siemens 6ES5090-8ME11 interface module measures 110 mm in length. Its width reaches 85 mm across the main body. The total height goes up to 30 mm with all connectors installed. This unit weighs approximately 0.22 kilograms for secure mounting.

Key hardware parameters include:

Complete Model: Siemens 6ES5090-8ME11
Component count: 42 individual electronic parts
Connector ports: One 15-pin SUB-D female interface
Energy storage: Two electrolytic capacitors (47 µF each)
Mounting system: Two front-panel locking screws
PCB layers: Four-layer industrial construction
Communication protocol: AS511 (TTL level)
Transmission rate: 9.6 kbps fixed
Cable length: Up to 50 meters maximum
Isolation: Optical between CPU and connected device
Indicators: One green LED for power status
Voltage supply: 5 V DC from CPU backplane

The Siemens 6ES5090-8ME11 interface module stores minimal residual charge after power-off. Therefore, technicians can perform replacements within two minutes. The module converts TTL signals to RS-232 levels internally. Moreover, it includes a 9-pin to 15-pin adapter cable with the unit.

Technical Parameter	Specification
Full Model Number	Siemens 6ES5090-8ME11
Dimensions (LxWxH)	110 mm x 85 mm x 30 mm
Weight	0.22 kg
Total Components	42 units
Connector Ports	1 x 15-pin SUB-D female
Energy Storage Caps	2 x 47 µF (electrolytic)
Communication Protocol	AS511 (TTL)
Transmission Rate	9.6 kbps
Max Cable Length	50 meters
Isolation Type	Optical
Indicators	1 green LED
Operating Voltage	5 V DC
Operating Temperature	0°C to +60°C
Humidity Tolerance	5% to 85% non-condensing

Application and Installation

The Siemens 6ES5090-8ME11 interface module screws onto the front panel of any S5 CPU. It requires no external power supply for basic operation. This module connects to OP15, OP17, and OP25 text displays. Consequently, you can add operator interface functionality without modifying your existing rack.

Signal Integrity and Reliability

This module filters electrical noise on all communication lines. Its optical isolation prevents ground loops between the CPU and display. The Siemens 6ES5090-8ME11 includes a green LED for power status indication. Therefore, you can verify module operation at a glance.

Always power down the CPU before connecting or disconnecting this module. Match the connector orientation carefully to avoid pin damage. The module features a strain relief clip for the interface cable. Furthermore, its conformal coating protects against dust and light moisture.