{"product_id":"omron-cj1w-scu32-serial-high-speed-communication-unit-sysmac-cj-series","title":"Omron CJ1W-SCU32 Serial High-Speed Communication Unit SYSMAC CJ Series","description":"\u003cp\u003eThe \u003cstrong\u003eOmron CJ1W-SCU32\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eCJ1W-SCU32\u003c\/strong\u003e Serial High-Speed Communication Unit, operates as a dedicated hardware component for multi-protocol serial communication execution within SYSMAC CJ Series platforms.\u003c\/p\u003e\n\u003ch3\u003eTechnical Identifier Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Hardware Model:\u003c\/strong\u003e CJ1W-SCU32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Part Number:\u003c\/strong\u003e CJ1W-SCU32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Serial High-Speed Communication Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries Family:\u003c\/strong\u003e Omron SYSMAC CJ Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Classification:\u003c\/strong\u003e CPU Bus Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Bus Architecture:\u003c\/strong\u003e CJ I\/O Bus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Port Count:\u003c\/strong\u003e 2 independent serial ports\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-SCU32\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\u003e0.11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e8.19 cm x 3.10 cm x 9.00 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e12.00 cm x 7.50 cm x 13.50 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e280 mA max at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e2 ports (MODBUS Master, MODBUS Slave, RS-422\/485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Baud Rate\u003c\/td\u003e\n\u003ctd\u003e230 kBit\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Protocols\u003c\/td\u003e\n\u003ctd\u003eProtocol Macro, Modbus-RTU, Serial Gateway, No-protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eOmron Backplane Bus Velocity \u0026amp; Real-Time Logic Execution\u003c\/h3\u003e\n\u003cp\u003eThe CJ1W-SCU32 operates as a CJ CPU Bus Unit, routing high-speed serial data blocks across the internal CJ I\/O Bus interface directly into CPU memory. The dual serial channels execute Modbus Master\/Slave commands and custom protocol macros independently of CPU cyclic ladder scans. Data throughput reaches speeds up to 230 kBit\/s per port, maintaining communication determinism during heavy data exchange phases. Onboard flash memory maintains protocol execution tables and unit parameters across power cycles without requiring external backup battery power.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Ordering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Omron CJ1W-SCU32 Serial High-Speed Communication Unit\u003c\/li\u003e\n\u003cli\u003e2x Serial port connector hardware shells\u003c\/li\u003e\n\u003cli\u003e1x Technical instruction sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Assembly:\u003c\/strong\u003e Slide the CJ1W-SCU32 onto the CJ Series CPU or expansion base rack until the backplane bus pins fully engage into the adjacent backplane socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Wiring:\u003c\/strong\u003e Terminate RS-422\/485 communication lines using twisted-pair cables, ensuring correct signal line polarities (A\/B) across all networked nodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Shielding:\u003c\/strong\u003e Terminate the outer braided cable shield 360 degrees to the metallic connector housing and connect it to panel earth ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Grounding:\u003c\/strong\u003e Connect the CPU power supply functional earth terminal to the main panel grounding bus with an electrical resistance under 100 Ohms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eIs hot-swapping permitted for the CJ1W-SCU32 on the CJ I\/O bus?\u003c\/p\u003e\n\u003cp\u003eNo. Internal system power must be isolated before inserting or removing the unit from the backplane rack assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat maximum current does the unit draw from the 5 VDC internal power rail?\u003c\/p\u003e\n\u003cp\u003eThe CJ1W-SCU32 draws a maximum current consumption of 280 mA at 5 VDC from the backplane supply.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat maximum baud rate is supported across the serial communication ports?\u003c\/p\u003e\n\u003cp\u003eBoth communication channels support data transmission rates up to a maximum limit of 230 kBit\/s.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat serial protocols can be executed natively on the CJ1W-SCU32?\u003c\/p\u003e\n\u003cp\u003eThe module natively executes Modbus-RTU Master\/Slave, Protocol Macro, Serial Gateway, and No-protocol ASCII formats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat interface standard is utilized for physical port wiring?\u003c\/p\u003e\n\u003cp\u003eThe unit incorporates 2 serial ports utilizing the RS-422\/485 differential physical signal standard.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the unit preserve protocol configuration settings during power loss?\u003c\/p\u003e\n\u003cp\u003eConfiguration tables and user protocol macros are stored in non-volatile onboard flash memory.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat cable shielding procedure must be implemented for RS-422 signal lines?\u003c\/p\u003e\n\u003cp\u003eSignal lines require continuous 360-deg braid shielding bonded directly to the enclosure protective earth ground.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat functional earth ground resistance boundary applies to the rack installation?\u003c\/p\u003e\n\u003cp\u003eThe central earth ground connection must maintain a ground loop resistance strictly under 100 Ohms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":47306617192621,"sku":"CJ1W-SCU32","price":127.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/CJ1W-SCU32_1.jpg?v=1788103339","url":"https:\/\/www.maxwellplc.com\/products\/omron-cj1w-scu32-serial-high-speed-communication-unit-sysmac-cj-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}