{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GK7443-5DX04-0XE1","brand":"Siemens","brandSlug":"siemens","productSlug":"6GK7443-5DX04-0XE1","canonicalUrl":"https://aoctrl.com/siemens/6GK7443-5DX04-0XE1","factsUrl":"https://aoctrl.com/api/mcp/products/6GK7443-5DX04-0XE1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens CP 443-5 Extended communications processor, 6GK7443-5DX04-0XE1, for S7-400 PROFIBUS DP, DPV1, single-width compact module.","salesMarkdown":"## PROFIBUS DP master for S7-400 racks The Siemens 6GK7443-5DX04-0XE1 is a CP 443-5 Extended communications processor that connects a SIMATIC S7-400 station to PROFIBUS DP as a DP master, supporting cyclic and acyclic data exchange with up to 125 DP slaves per master. It draws 1 A at 5 V DC from the S7-400 backplane bus, dissipating 5 W, and fits a single-width slot in the rack — 25 mm wide, 290 mm tall, 210 mm deep. ## Master capacity and system limits The total number of CPs in an S7-400 station is capped at 10: up to 4 can operate as PROFINET IO controllers (CP 443-1 Advanced), and up to 10 can act as DP masters (CP 443-5 Extended). Each DP master handles up to 125 slaves, with 244 bytes of input and 244 bytes of output address range per slave. The module supports up to 14 connections per CPU, 54 with DP, 59 without DP, and 48 maximum connections overall. It requires STEP 7 V5.4 SP4 or higher with NCM S7 for PROFIBUS for configuration, and the 9-pin Sub-D RS485 interface follows the PROFIBUS standard. Rated IP20, the module operates at 0 to 60 °C and stores or transports at -40 to +70 °C. Siemens industrial security guidance applies — regular product updates and a cell protection concept are recommended for secure operation.","metaTitle":"Siemens 6GK7443-5DX04-0XE1 CP 443-5 Extended, DP Master","metaDescription":"Siemens 6GK7443-5DX04-0XE1 CP 443-5 Extended communications processor for S7-400 PROFIBUS DP. DPV1, 125 DP slaves per master, 5 W. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"DPV1":"Yes","Note":"The number of CPs that can be operated as DP masters depends on the number of CP 443-1 Advanced processors operating in the S7-400 station as PROFINET IO controllers. Up to 10 CPs can be operated in total: up to 4 as PROFINET IO controllers (CP 443-1 Advanced); up to 10 as DP masters (CP 443-5 Extended)","Depth":"210 mm","Width":"25 mm","Height":"290 mm","at 5 V":"5 %","Maximum":"48","Required":"STEP 7 V5.4 SP4 or higher and NCM S7 for PROFIBUS","Module Format":"Compact module S7-400 single width","During Storage":"-40 ... +70 °C","power loss [W]":"5 W","lifecycle_stage":"current","During Operation":"0 ... 60 °C","During Transport":"-40 ... +70 °C","per CPU / maximum":"14","with DP / maximum":"54","protection class IP":"IP20","Security Information":"Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, equipment and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens’ products and solutions undergo continuous development. Siemens recommends strongly that you regularly check for product updates. For the secure operation of Siemens products and solutions, it is necessary to take suitable preventive action(e.g. cell protection concept) and integrate each component into a holistic, state-of-the-art industrial security concept. Third-party products that may be in use should also be considered. For more information about industrial security, visit http://www.siemens.com/industrialsecurity. To stay informed about product updates as they occur, sign up for a product-specific newsletter. For more information, visit http://support.automation.siemens.com. (V3.4)","without DP / maximum":"59","on DP master / operable":"125","Supply Voltage / 1 / From Backplane Bus":"5 V","Type Of Voltage / Of The Supply Voltage":"DC","at the 1st interface / according to PROFIBUS":"9-pin Sub-D socket (RS485)","from backplane bus / at DC / at 5 V / typical":"1 A","of the address range of the inputs / per DP slave":"244 byte","of the address range of the outputs / per DP slave":"244 byte","number of interfaces / according to Industrial Ethernet":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b9072a66e1476e17c29af584d4719fc3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=381813&mlfb=6GK7443-5DX04-0XE1","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GK7443-5DX04-0XE1/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum number of DP masters supported by CP 443-5 Extended?","answer":"Up to 10 CPs can operate as DP masters in a single S7-400 station, subject to the total CP limit of 10 and the constraint of up to 4 PROFINET IO controllers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GK7443-5DX04-0XE1","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/6GK7443-5DX04-0XE1 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}}