{"product_id":"omron-cj1w-prt21-profibus-dp-i-o-link-unit-sysmac-cj1-series","title":"Omron CJ1W-PRT21 PROFIBUS-DP I\/O Link Unit SYSMAC CJ1 Series","description":"\u003cp\u003eThe \u003cstrong\u003eOmron CJ1W-PRT21\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eCJ1W-PRT21\u003c\/strong\u003e PROFIBUS-DP I\/O Link Unit, operates as a dedicated hardware component for fieldbus data exchange and distributed slave communication within SYSMAC CJ1 Series platforms.\u003c\/p\u003e\n\u003ch3\u003eTechnical Identifier Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Omron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model:\u003c\/strong\u003e CJ1W-PRT21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Part Number:\u003c\/strong\u003e CJ1W-PRT21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries Name:\u003c\/strong\u003e SYSMAC CJ1 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e PROFIBUS-DP I\/O Link Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHost System:\u003c\/strong\u003e CJ1 Series PLC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCJ1W-PRT21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOmron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.09 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e3.1 cm x 9.0 cm x 6.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e5.0 cm x 11.0 cm x 9.0 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C ... +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2.0 W (0.40 A at 5 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e400 mA max at 5 VDC (from PLC power supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e10 % to 90 % RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Units per System\u003c\/td\u003e\n\u003ctd\u003e40 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNode Address Setting\u003c\/td\u003e\n\u003ctd\u003e00 to 99 via 2x rotary switches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFieldbus Interface\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS-DP Slave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC Controller Processing \u0026amp; Backplane Communication\u003c\/h3\u003e\n\u003cp\u003eThe CJ1W-PRT21 interface unit manages high-speed cyclic data transfer between the CJ1 backplane bus and a PROFIBUS-DP master controller. Operating across the internal backplane bus velocity framework, the unit transfers mapped I\/O memory areas directly without delaying CPU instruction timing. Up to 40 units can be installed per host PLC system depending on backplane power budget constraints. Internal firmware flash compatibility ensures synchronized cyclic slave responses across the PROFIBUS-DP network segment while preventing I\/O data collision or buffer overflow during high-density I\/O exchange cycles.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Ordering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Omron CJ1W-PRT21 PROFIBUS-DP I\/O Link Unit\u003c\/li\u003e\n\u003cli\u003e1x CJ1 System Bus Connector Cover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Snap the unit into the standard CJ1 CPU or expansion rack slot and lock the top and bottom slider catches onto the DIN rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Connect the PROFIBUS-DP network cable via a standard 9-pin D-sub female connector (RS-485 physical layer), securing terminal screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding:\u003c\/strong\u003e Terminate the PROFIBUS cable braid shield 360-deg to the metal shell of the D-sub connector to minimize high-frequency noise interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ensure the CJ1 system functional earth (FE) terminal is bonded directly to the main panel ground bus using a low-impedance copper strap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum current drawn by the CJ1W-PRT21 from the backplane?\u003c\/p\u003e\n\u003cp\u003eThe module draws a maximum current of 400 mA at 5 VDC directly from the PLC backplane power supply rail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the PROFIBUS-DP node address set on the CJ1W-PRT21?\u003c\/p\u003e\n\u003cp\u003eThe node address is selected in the range of 00 to 99 using two physical rotary switches located on the front panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow many CJ1W-PRT21 units can be installed in a single CJ1 PLC system?\u003c\/p\u003e\n\u003cp\u003eA maximum of 40 units can be installed per host PLC system, subject to total backplane power supply current limits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat physical envelope dimensions apply to the CJ1W-PRT21 module?\u003c\/p\u003e\n\u003cp\u003eThe module physical dimensions measure 3.1 cm x 9.0 cm x 6.5 cm with a net unit weight of 0.09 kg.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the CJ1W-PRT21 operate as a PROFIBUS-DP Master or Slave?\u003c\/p\u003e\n\u003cp\u003eThe CJ1W-PRT21 functions specifically as a PROFIBUS-DP Slave I\/O link unit for cyclic data exchange with a DP master.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat are the operating ambient environmental limits for this unit?\u003c\/p\u003e\n\u003cp\u003eThe module operates in ambient temperatures from 0 deg C to +55 deg C and relative humidity from 10 % to 90 % (non-condensing).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat physical communication interface does the CJ1W-PRT21 use for network connection?\u003c\/p\u003e\n\u003cp\u003eThe module utilizes a standard 9-pin D-sub RS-485 connector interface for PROFIBUS-DP network wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the CJ1W-PRT21 require external 24 VDC field power for communication?\u003c\/p\u003e\n\u003cp\u003eNo, the unit operates entirely on internal 5 VDC backplane power supplied by the host CJ1 power supply module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":47306643734701,"sku":"CJ1W-PRT21","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/CJ1W-PRT21_1.jpg?v=1788156961","url":"https:\/\/www.maxwellplc.com\/ru\/products\/omron-cj1w-prt21-profibus-dp-i-o-link-unit-sysmac-cj1-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}