{"product_id":"siemens-simatic-s7-1200-as-interface-cm-1243-2","title":"Siemens SIMATIC S7-1200 AS-Interface master CM 1243-2 \u0026 DCM 1271","description":"\u003cp class=\"ps-intro\"\u003eAS-Interface master module for SIMATIC S7-1200 with data decoupling module and accessories.\u003c\/p\u003e\u003ch4 class=\"ps-h\"\u003eKey features\u003c\/h4\u003e\u003cul class=\"ps-feat\"\u003e\n\u003cli\u003eAS-i master to AS-Interface specification V3.0\u003c\/li\u003e\n\u003cli\u003eUp to 496 DI \/ 496 DQ on AS-Interface per CM\u003c\/li\u003e\n\u003cli\u003eDCM 1271 data decoupling module, max. 1 x 4 A\u003c\/li\u003e\n\u003cli\u003eRemovable screw terminals included\u003c\/li\u003e\n\u003cli\u003eAS-Interface addressing unit V3.0\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4 class=\"ps-h\"\u003eSpecifications\u003c\/h4\u003e\u003ctable class=\"ps-kv\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct line\u003c\/th\u003e\n\u003ctd\u003eSIMATIC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eSIMATIC S7-1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eAS-Interface V3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. I\/O per CM\u003c\/th\u003e\n\u003ctd\u003e496 DI \/ 496 DQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (WxHxD)\u003c\/th\u003e\n\u003ctd\u003e30 x 100 x 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering\u003c\/th\u003e\n\u003ctd\u003eSTEP 7 (TIA Portal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource\u003c\/th\u003e\n\u003ctd\u003eSiemens Catalog ST 70 · 2026, p. 297-299\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ctable class=\"ps-src\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RK7243-2AA30-0XB0\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eItem: CM 1243-2 communications module | Detail: AS-i master, 30 x 100 x 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RK7271-1AA30-0AA0\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eItem: DCM 1271 data decoupling module | Detail: Max. 1 x 4 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RK1901-3MA00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eItem: Screw terminals (spare part) | Detail: 5-pole, for CM 1243-2 and DCM 1271\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RK1901-3MB00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eItem: Screw terminals (spare part) | Detail: 3-pole, DCM 1271 power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RK1904-2AB02\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eItem: AS-Interface addressing unit V3.0 | Detail: With addressing cable, IP40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67534366900514,"sku":"3RK7243-2AA30-0XB0","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/0744\/7586\/files\/siemens-simatic-s7-1200-as-interface-cm-1243-2.jpg?v=1792131802","url":"https:\/\/prosourcemro.com\/products\/siemens-simatic-s7-1200-as-interface-cm-1243-2","provider":"ProSource MRO","version":"1.0","type":"link"}