6ES7138-6AA00-0BA0 Siemens Technology Module (TM), Counter

Product Overview

The Siemens 6ES7138-6AA00-0BA0 is a TM Count 1x24V technology module for the SIMATIC ET 200SP distributed I/O system. It provides 1 high-speed counter channel for 24V incremental encoders or pulse encoders, plus 3 digital inputs and 2 digital outputs for gate control, capture, and comparison value switching. With counting frequencies up to 200 kHz, it enables precise position, speed, and quantity measurement in compact automation systems.

Key Specifications

• Module Type: Technology Module (TM), Counter
• Counter Channels: 1 channel
• Encoder Type: 24V incremental encoder or 24V pulse encoder
• Maximum Counting Frequency: 200 kHz
• Digital Inputs: 3 DI (gate, capture, synchronization)
• Digital Outputs: 2 DQ (comparison value switching)
• Counting Range: 32-bit signed integer (-2,147,483,648 to +2,147,483,647)
• Functions: Counting, frequency measurement, period measurement, speed measurement, pulse width modulation
• Base Unit Type: A0
• Power Loss: Typ. 1.0 W

Compatibility & Applications

Compatible with ET 200SP IM155-6 PN/DP interface modules and BaseUnits type A0. Ideal for conveyor belt counting, rotary encoder position feedback, packaging quantity measurement, material flow monitoring, and speed control in manufacturing, logistics, and food processing applications.

FAQ

• Q: What is the maximum counting frequency? A> 200 kHz for 24V incremental/pulse encoders. Verify your encoder output frequency is within this limit.
• Q: Can this module be used for SSI absolute encoders? A> No, for SSI absolute encoders, use TM PosInput 1 module (6ES7138-6BA00-0BA0).
• Q: What TIA Portal version is required? A> TIA Portal V12 or higher. For advanced functions, V14 or higher is recommended.
• Q: Is there a successor model? A> Yes, 6ES7138-6AA01-0BA0 is the current successor with enhanced firmware features.

Installation Guide

1. Install BaseUnit BU15-P16+A0+2B on the ET 200SP DIN rail.
2. Insert 6ES7138-6AA00-0BA0 into the BaseUnit.
3. Connect 24V encoder (A, B, N signals) to the designated push-in terminals.
4. Wire digital inputs for gate/capture functions and digital outputs for comparison switching.
5. Configure counting mode, gate behavior, and comparison values in TIA Portal.

Selection Tips

• Use 6ES7138-6AA00-0BA0 for single-channel 24V high-speed counting applications.
• For SSI absolute encoder position input, use 6ES7138-6BA00-0BA0 (TM PosInput 1).
• For dual-channel counting, consider 6ES7138-6AA01-0BA0 or alternative technology modules.
• Verify encoder supply voltage (24V) and output type (push-pull, PNP, NPN) compatibility.