{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7550-1AA00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7550-1AA00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7550-1AA00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7550-1AA00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1500 TM Count, 6ES7550-1AA00-0AB0, 2-channel high-speed counter, 24 V DC, 35 x 147 x 129 mm, firmware V1.3.","salesMarkdown":"Siemens TM Count module for S7-1500, order code 6ES7550-1AA00-0AB0. Two-channel high-speed counter with integrated encoder supply (one 24 V output common to both channels). Captures and counts pulses from incremental encoders or pulse generators, with a software gate for start/stop control and isochronous mode for deterministic data transfer. Inputs are 16 bytes per channel; outputs are 12 bytes per channel including 4 bytes for motion control data. Signal thresholds: logic 0 from -5 to +5 V, logic 1 from +11 to +30 V. Response time 50 µs per edge.","metaTitle":"Siemens 6ES7550-1AA00-0AB0 TM Count Module, 2-Ch, 24V","metaDescription":"Active S7-1500 counter module, 2 channels, 24 V supply, capture/counter, isochronous mode, 16 byte inputs, firmware V1.3. Sourced to order. RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"24 V":"Yes; L+ (-0.8 V)","Depth":"129 mm","Width":"35 mm","Height":"147 mm","Inputs":"16 byte; Per channel","Capture":"Yes","Counter":"Yes","Outputs":"12 byte; per channel; 4 bytes for Motion Control","RUN LED":"Yes; green LED","I&M data":"Yes; I&M0 to I&M3","ERROR LED":"Yes; red LED","MAINT LED":"Yes; Yellow LED","Wire-break":"Yes","Lower Limit":"48 Ω","Upper Limit":"12 kΩ","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":"V1.3","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","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","Bus cycle time (TDP), min.":"250 µs","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.":"0 °C","to standard PROFIBUS master":"Yes; FW V1.1 and higher","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.":"0 °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","Filtering and processing time (TCI), min.":"130 µs","Status indicator forward counting (green)":"Yes","Monitoring of the supply voltage (PWR-LED)":"Yes; green LED","Status indicator backward counting (green)":"Yes","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+ (-33 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":"V12 (FW V1.0) ... V15 (FW V1.3)/V12 (FW V1.0), V13 (FW V1.1)","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":"$915.67 – $1,058.00","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=244462&mlfb=6ES7550-1AA00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7550-1AA00-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the physical depth of this module?","answer":"129 mm front to back, consistent with standard S7-1500 modules. Width is 35 mm, height is 147 mm."},{"question":"Can this module be sourced as a replacement for a failed unit?","answer":"Yes. The 6ES7550-1AA00-0AB0 is an active, current-production module. It is ordered against RFQ; typical lead times are quoted per request. No direct hardware or firmware changes are expected from earlier versions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7550-1AA00-0AB0","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/6ES7550-1AA00-0AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}