{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7550-1AA01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7550-1AA01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7550-1AA01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7550-1AA01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1500 TM Count 6ES7550-1AA01-0AB0, 24 V DC, 32-byte inputs, incremental encoder signal thresholds -5..+5 V (signal 0) / +11..+30 V (signal 1), 35 x 129 x 147 mm, active production.","salesMarkdown":"The 6ES7550-1AA01-0AB0: S7-1500 TM Count module rated for a single 24 V DC supply, drawing 4 W. The L+ supply rail sees a 0.8 V drop, so budget that into your 24 V loop if the cabinet runs at the low end of the tolerance. Signal thresholds for incremental encoders sit at -5..+5 V for logic 0 and +11..+30 V for logic 1 — matches standard 24 V sensor levels for push-pull outputs, while the negative window accommodates differential RS422 signals. Supports fast mode with 4 bytes per channel, alongside capture, counter, and gate functions. Firmware V2.0 enables isochronous mode for synchronized axis positions. Width 35 mm, depth 129 mm, height 147 mm. Unshielded cable max 600 m; shielded max 1 000 m. The common 24 V encoder supply output provides power for one encoder per channel — no additional external source needed for incremental types. Watch the total current draw against the backplane rating. Current lifecycle — no end-of-life notice or phase-out. The part ships with firmware V2.0 as standard, so the BOM is locked for the product line's expected run. Sourced to order; same part, different passport — if you are cross-sourcing from multiple regions, verify the firmware version matches your project to avoid a field-update step.","metaTitle":"Siemens 6ES7550-1AA01-0AB0 S7-1500 TM Count Module","metaDescription":"Siemens S7-1500 TM Count module 6ES7550-1AA01-0AB0. 24 V supply, incremental encoder support, signal thresholds -5..+5V / +11..+30V. 32-byte inputs, fast mode. Current production,","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC Communication Modules"],"specifications":{"24 V":"Yes; L+ (-0.8 V)","Depth":"129 mm","Probe":"Yes","Width":"35 mm","title":"6ES7550-1AA01-0AB0","Height":"147 mm","Inputs":"32 byte; 16 bytes per channel; 4 bytes for fast mode","Capture":"Yes","Counter":"Yes","Outputs":"24 byte; 12 bytes per channel; 4 bytes for Motion Control, 0 bytes for fast mode","RUN LED":"Yes; green LED","I&M data":"Yes; I&M0 to I&M3","ERROR LED":"Yes; red LED","Fast mode":"Yes","MAINT LED":"Yes; Yellow LED","Wire-break":"Yes","Lower Limit":"48 Ω","Upper Limit":"12 kΩ","description":"SIMATIC S7-1500, TM count 2x 24 V counter module, 2 channels for 24 V incremental encoder or pulse encoder, 3 DI, 2 DQ per channel","2-Wire Sensor":"Yes","Input voltage":"24 V","Pulse Encoder":"Yes","Rail mounting":"Yes; S7-1500 mounting rail","Short-circuit":"Yes","Software gate":"Yes","For Signal \"0\"":"-5 ... +5 V","For Signal \"1\"":"+11 to +30V","Shielded, Max.":"1 000 m","Gate start/stop":"Yes","Parameterizable":"Yes","Synchronization":"Yes","Weight, approx.":"250 g","lifecycle_stage":"current","\"0\" To \"1\", Max.":"50 µs","\"1\" To \"0\", Max.":"50 µs","Diagnostic alarm":"Yes","Firmware version":"V2.0","Isochronous mode":"Yes","Power loss, typ.":"4 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Number of outputs":"1; A common 24V encoder supply for both channels","Source/sink input":"Yes","to SIMATIC S7-300":"Yes","to SIMATIC S7-400":"Yes","FW update possible":"Yes","Hardware interrupt":"Yes","Number of counters":"2","On Lamp Load, Max.":"10 Hz","to SIMATIC S7-1200":"Yes","to SIMATIC S7-1500":"Yes","At \"0\" To \"1\", Min.":"6 µs; for parameterization \"none\"","At \"1\" To \"0\", Min.":"6 µs; for parameterization \"none\"","Continuous counting":"Yes","Between The Channels":"No","Direction dependency":"Yes","For Signal \"1\", Min.":"23.2 V; L+ (-0.8 V)","For Signal \"1\", Typ.":"2.5 mA","Output current, max.":"1 A; total current of all encoders/channels","Velocity measurement":"100 ppm; depending on measuring interval and signal evaluation","Event-controlled stop":"Yes","Frequency measurement":"100 ppm; depending on measuring interval and signal evaluation","Input frequency, max.":"200 kHz","Isolation tested with":"707 V DC (type test)","Number of comparators":"2; Per channel","Type of input voltage":"DC","suitable for SIMOTION":"Yes","Channel status display":"Yes; green LED","Type of digital output":"Transistor","Type of output voltage":"DC","For Channel Diagnostics":"Yes; red LED","Incremental acquisition":"Yes","Counting frequency, max.":"800 kHz; with quadruple evaluation","Current per module, max.":"2 A","Number of digital inputs":"6; 3 per channel","Response threshold, typ.":"1 A","Short-circuit protection":"Yes; electronic/thermal","Current consumption, max.":"75 mA; without load","Number of digital outputs":"4; 2 per channel","With Inductive Load, Max.":"0.5 Hz; Acc. to IEC 60947-5-1, DC-13; observe derating curve","With Resistive Load, Max.":"10 kHz","Cycle duration measurement":"100 ppm; depending on measuring interval and signal evaluation","For Signal \"1\" Rated Value":"0.5 A; Per digital output","Controlling a digital input":"Yes","Freely usable digital input":"Yes","Frequency measurement, max.":"800 kHz","Frequency measurement, min.":"0.04 Hz","Reverse polarity protection":"Yes","Vertical Installation, Max.":"40 °C; Please note derating for inductive loads","Vertical Installation, Min.":"-30 °C","to standard PROFIBUS master":"Yes","Cable length, shielded, max.":"600 m; depending on input frequency, encoder and cable quality; max. 50 m at 200 kHz","Freely usable digital output":"Yes","Pulse Encoder With Direction":"Yes","Horizontal Installation, Max.":"60 °C; Please note derating for inductive loads","Horizontal Installation, Min.":"-30 °C","Monitoring the supply voltage":"Yes","Signal filter, parameterizable":"Yes","Counting range, parameterizable":"Yes","Digital inputs, parameterizable":"Yes","Hardware gate via digital input":"Yes","Measuring time, parameterizable":"Yes","to standard PROFINET controller":"Yes","Can be changed from user program":"Yes","Counter response parameterizable":"Yes","Cycle duration measurement, max.":"25 s","Cycle duration measurement, min.":"1.25 µs","Digital outputs, parameterizable":"Yes","Synchronization via digital input":"Yes","Permissible Voltage At Input, Max.":"30 V","Permissible Voltage At Input, Min.":"-30 V; -5 V continuous, -30 V brief reverse polarity protection","For Signal \"1\" Minimum Load Current":"2 mA","Suitable for S7-1500 Motion Control":"Yes","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","Dynamic measurement period adjustment":"Yes","For Signal \"0\" Residual Current, Max.":"0.5 mA","Number of thresholds, parameterizable":"2","Between The Channels And Backplane Bus":"Yes","Can be used with TO High_Speed_Counter":"Yes","For Signal \"1\" Permissible Range, Max.":"0.6 A; Per digital output","PROFIBUS from GSD version/GSD revision":"GSD Revision 5","PROFINET from GSD version/GSD revision":"V2.3 / -","Power available from the backplane bus":"1.3 W","Switching tripped by comparison values":"Yes","Between the channels and load voltage L+":"No","Monitoring of the supply voltage (PWR-LED)":"Yes; green LED","A/B transition error at incremental encoder":"Yes","Installation altitude above sea level, max.":"5 000 m; restrictions for installation altitudes > 2 000 m, see ET 200MP system manual","Limitation of inductive shutdown voltage to":"L+ (-53 V)","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA","Incremental encoder with A/B tracks, 90° phase offset":"Yes","STEP 7 TIA Portal configurable/integrated from version":"V16 with HSP 0332 / V17","Pulse Encoder With One Impulse Signal Per Count Direction":"Yes","Incremental encoder with A/B tracks, 90° phase offset and zero track":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$360.68 – $588.57","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb24f3d651d5056e750fb0030aff1edf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1480363&mlfb=6ES7550-1AA01-0AB0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7550-1AA01-0AB0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7550-1AA01-0AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}