Siemens 6ES7551-1AB00-0AB0 is a SIMATIC S7-1500 TM PosInput 2 technology module for counter and position detection tasks. Its two channels accept RS-422 incremental encoders or SSI absolute encoders, while each channel provides two digital inputs and two digital outputs for signal-related control functions. The module supports isochronous operation and mounts on an S7-1500 mounting rail. It suits maintenance, expansion and controlled replacement work where an existing automation project requires this complete article number. Before ordering, compare the suffix, firmware level, encoder type, supply arrangement, wiring, mechanical space and STEP 7 project requirements.
| Identity and lifecycle | |
|---|---|
| Manufacturer | Siemens |
| Complete Part Number | 6ES7551-1AB00-0AB0 |
| Product Type | Counter and position detection technology module |
| Series / Designation | SIMATIC S7-1500 / TM PosInput 2 |
| Article Status | Siemens spare-part article |
| Electrical and functional data | |
| Channels | 2 |
| Firmware | V1.3; firmware update possible |
| Isochronous Mode | Yes |
| Rated Load Supply | 24 V DC; permitted range 19.2 to 28.8 V DC |
| Current Consumption | Maximum 75 mA without load |
| Encoder Supplies | One 5 V and one 24 V encoder supply per channel |
| Backplane Bus Power | 1.3 W available |
| Typical Power Loss | 5.5 W |
| Mechanical and commercial data | |
| Dimensions | 35 × 147 × 129 mm (W × H × D) |
| Approximate Weight | 325 g |
| Mounting | S7-1500 mounting rail |
| Product Condition | NEW |
| Country of Origin | GERMANY |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping options are confirmed in the written quotation. |
Confirm the full suffix, encoder system, channel assignments, 24 V DC supply, connectors, shielding, firmware, STEP 7 version, mounting dimensions and original label photographs.
Siemens lists 6ES7551-1AB01-0AB0 as a later article. It requires an engineering review and is not presented as an automatic direct replacement.
It provides two-channel counting and position detection with RS-422 incremental or SSI absolute encoders.
Each channel has two digital inputs and two digital outputs.
The official technical data lists firmware V1.3 and supports firmware updating.
The suffix identifies the exact article. Match every character with the installed label and project records.
No. Project configuration, firmware, encoder interfaces, wiring and application requirements must be reviewed first.
The available international route and shipment terms are stated in the written quotation.
NEW condition, GERMANY origin and the stated warranty are commercial information confirmed by the seller and are not presented as manufacturer commitments.
Stockoems is operated by Apter Power Limited and is an independent reseller of industrial automation products. Manufacturer names and trademarks are used for identification purposes only.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Send the complete model, quantity, destination and product label photographs. Availability and timing are confirmed only in the written quotation.
Each entry is an independent product listing and is not presented as a direct replacement. Confirm the manufacturer, complete part number, revision and compatibility before ordering.
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Provide the exact required model and quantity.
Compare labels, revision and application requirements.
Confirm condition, destination and shipping terms in writing.
Send the complete model, required quantity and destination. Our team will verify listing details, condition and shipping options before quotation.
