{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7197-1LB00-0XA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7197-1LB00-0XA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7197-1LB00-0XA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7197-1LB00-0XA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7, 6ES7197-1LB00-0XA0, Y coupler for redundant controllers, PROFIBUS DP, max 12 Mbit/s, 31 slaves, 130x40x125 mm, IP20, active lifecycle.","salesMarkdown":"## Why this Y coupler exists The 6ES7197-1LB00-0XA0 is a Y coupler for setting up a Y-Link between redundant SIMATIC S7 controllers and a PROFIBUS DP fieldbus. Without it, a redundant CPU pair cannot present a single PROFIBUS DP address to the line — the Y coupler merges the two active DP masters into one logical master interface. It supports transmission rates from 45.45 kbit/s up to 12 Mbit/s, matching the speed of the downstream DP segment. The active terminating resistor on the lower-level DP master system eliminates the need for an external bus terminator at the Y-link node. ## Slave count and bus extension The Y coupler handles up to 31 DP slaves directly. Adding RS 485 repeaters or OLM/OBT optical link modules pushes that ceiling to 64 slaves — useful when the field devices are spread across multiple cabinets or floors. Up to nine RS 485 repeaters can be cascaded in the lower-level DP master system. The 244-byte parameter assignment telegram length accommodates complex slave configurations without fragmentation. ## Panel fit and power Typical power loss is just 1 W, so no forced-air cooling is required in a standard IP20 enclosure.","metaTitle":"Siemens 6ES7197-1LB00-0XA0 Y Coupler, PROFIBUS DP, 12 Mbit/s","metaDescription":"SIMATIC S7 Y coupler for redundant controllers. Active lifecycle. PROFIBUS DP, 12 Mbit/s, 31 slaves. 130x40x125 mm, IP20. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC Communication Modules"],"specifications":{"Depth":"130 mm","Width":"40 mm","Alarms":"No","Height":"125 mm","PROFIBUS DP":"Yes","AS-Interface":"No","Use of OLM/OBT":"Yes","Weight, approx.":"200 g","lifecycle_stage":"current","Power loss, typ.":"1 W","Status indicator":"No","Diagnostics function":"Yes","IP degree of protection":"IP20","Transmission rate, max.":"12 Mbit/s; 45.45 kbit/s to 12 Mbit/s","Current consumption, max.":"300 mA","Number of DP slaves, max.":"31; 64 when using RS 485 repeaters or OLM/OBT","Design of the power supply":"via bus module","Use of RS 485 repeaters, max.":"9","to lower-level DP master system":"Yes","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Length of parameter assignment telegram":"244 byte","Termination of lower-level DP master system":"active terminating resistor (Bus Terminator)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$331.47 – $496.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e8064526b3a903abe118808640b1ec63.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=522876&mlfb=6ES7197-1LB00-0XA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7197-1LB00-0XA0/alternatives.json"},"ai":{"faq":[{"question":"Is 6ES7197-1LB00-0XA0 compatible with S7-300?","answer":"Yes, it is a SIMATIC S7 Y coupler designed to work with S7-300 redundant controllers. It mounts on the DIN rail alongside the CPU rack and draws power from the bus module."},{"question":"What is the maximum transmission rate of 6ES7197-1LB00-0XA0?","answer":"The Y coupler supports PROFIBUS DP at up to 12 Mbit/s, with a range from 45.45 kbit/s to 12 Mbit/s."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7197-1LB00-0XA0","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/6ES7197-1LB00-0XA0 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}}