{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7964-2AA01-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7964-2AA01-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7964-2AA01-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7964-2AA01-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7, IF964-DP Interface module DP master for S7-400, 256 kbyte buffer, 12 Mbit/s, 18.2 x 67 x 97 mm.","salesMarkdown":"The Siemens 6ES7964-2AA01-0AB0 is the IF964-DP interface module for the SIMATIC S7-400 rack. It functions as a PROFIBUS DP master by default, with the ability to also operate as a DP slave, handling PG/OP communication and direct data exchange (slave-to-slave). It carries a 256 kbyte buffer memory implemented as Dual Port RAM, enough to buffer process data for coordinated multi-drop lines. The module supports SYNC/FREEZE and equidistance modes, which matter when you need deterministic scan cycles across DP slaves. Maximum transmission rate hits 12 Mbit/s, but cable length depends on baud rate — at 9.6 kbit/s you can run 1 200 m, at 12 Mbit/s it drops to 100 m. Plan your segment lengths accordingly. ## Panel fit and power budget It draws up to 450 mA from the backplane bus and dissipates 2 W typical. That's within the S7-400 power budget for most configurations, but check your CPU's total backplane current limit if the rack is heavily loaded. I/O mapping supports up to 244 bytes each for inputs and outputs, with a maximum of 125 DP slaves depending on the CPU used. One slot each is reserved for PG and OP communication. The description explicitly marks it as a replacement part for the S7-400 DP master function. If you are maintaining an existing S7-400 installation, this is the correct drop-in module for the IF964-DP slot.","metaTitle":"Siemens 6ES7964-2AA01-0AB0 IF964-DP Interface Module, PROFIB","metaDescription":"Siemens SIMATIC S7 IF964-DP interface module, PROFIBUS DP master/slave, 12 Mbit/s, 256 kB buffer, 18.2 mm wide. Mature lifecycle; sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Accessories"],"specifications":{"Depth":"97 mm","Width":"18.2 mm","title":"6ES7964-2AA01-0AB0","Height":"67 mm","Overall":"device-dependent","Isolated":"Yes","Memory size":"256 kbyte; Buffer memory (Dual Port RAM)","SYNC/FREEZE":"Yes","description":"********** Replacement part ********* SIMATIC S7, IF964-DP Interface module DP master for S7-400","Equidistance":"Yes","Inputs, max.":"244 byte","Outputs, max.":"244 byte","Weight, approx.":"65 g","lifecycle_stage":"mature","Power loss, typ.":"2 W","PROFIBUS DP slave":"Yes","Cable length, max.":"1 200 m; At 9.6 kbit/s: max. 1 200 m; at 12 Mbit/s: max. 100 m","PROFIBUS DP master":"Yes; Default setting","PG/OP communication":"Yes","Transmission rate, max.":"12 Mbit/s","Current consumption, max.":"450 mA","Number of DP slaves, max.":"125; depending on the CPU used","reserved for OP communication":"1","reserved for PG communication":"1","Direct data exchange (slave-to-slave communication)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$345.19","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/25a3cbdb9299ba31cc463d0843d3a29e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=139854&mlfb=6ES7964-2AA01-0AB0"},"ai":{"faq":[{"question":"What are the key ratings for this interface module?","answer":"It operates as a PROFIBUS DP master (default) or slave at up to 12 Mbit/s, with 256 kbyte Dual Port RAM buffer memory, 244 bytes max I/O each direction, and draws 450 mA from the backplane. Physical dimensions are 18.2 x 67 x 97 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7964-2AA01-0AB0","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/6ES7964-2AA01-0AB0 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}}