Product Overview
Technical Summary
| Product type designation | TM PosInput 2 |
|---|---|
| Number of channels | 2 |
| Encoder support | RS-422 incremental encoder or SSI absolute encoder |
| Digital I/O | 2 DI and 2 DQ per channel |
| Counting frequency, max. | 4 MHz; with quadruple evaluation |
| Load voltage L+, rated value (DC) | 24 V |
| Firmware version | V2.0 |
| Rail mounting | Yes; S7-1500 mounting rail |
Key Features
- Counter and position detection: TM PosInput 2 provides counter, incremental acquisition, absolute acquisition, and position detection functions.
- Two-channel configuration: The module has 2 channels, with 2 digital inputs and 2 digital outputs per channel.
- Encoder interfaces: It supports RS-422 incremental encoders and SSI absolute encoders; 5 V TTL is supported for push-pull encoders only.
- Counting performance: Maximum counting frequency is 4 MHz with quadruple evaluation; input frequency is up to 1 MHz for incremental encoders.
- Supply and mounting: Rated load voltage is 24 V DC, with a permissible range of 19.2 V to 28.8 V. Mounting is on an S7-1500 mounting rail.
- Firmware and engineering: Firmware version is V2.0, firmware updates are possible, and configuration is integrated in STEP 7 TIA Portal from V17.
Applications
- Counting: Supports continuous counting, hardware and software gates, event-controlled stop, and synchronization via digital input.
- Position detection: Supports incremental and absolute acquisition and is suitable for S7-1500 Motion Control.
- Measurement: Provides parameterizable frequency, cycle duration, and velocity measurement functions.
Frequently Asked Questions
What does Siemens order number 6ES7551-1AB01-0AB0 identify?
It identifies the SIMATIC S7-1500 TM PosInput 2 counter and position detection module.
Which specifications distinguish this exact module variant?
The supplied configuration has 2 channels, RS-422 incremental or SSI absolute encoder support, and 2 DI and 2 DQ per channel.
What firmware details should be checked?
The supplied firmware version is V2.0, and firmware updates are possible.
What should be provided for a quotation?
Provide the complete order number, required quantity, and destination.
