BB-485CON RS-232 to RS-485 Serial Converter Features Converts unbalanced, full-duplex RS-232 to balanced, full-duplex or half-duplex RS-485 Extend RS-232 data signals up to 1.2 km (4000 ft) Data rate: 240 kbps baud (typical) Quick, easy inline installation Power supply required (not included, sold separately) Introduction Ordering Information Model BB-485CON, RS-232 to RS-485 converter, converts unbalanced, full-duplex Model No. RS-232 RS-485 Output RS-232 signals to balanced, full-duplex or half-duplex RS-485 signals. RS-485 is an enhanced version of the RS-422 balanced line standard. It allows multiple drivers and BB-485CON DB25 Male DB25 Female RS-485 full-duplex or half-duplex receivers on a two-wire system. The RS-232 port uses a male DB-25P type of connector with pins 2 (TD input) and 3 Accessories Sold Separately (RD output) supported. Protective Ground (pin 1) and Signal Ground (pin 7) are also BB-SMI6B12V-P230C1 Power Supply, 12 Vdc, 6 W, 2.5mm plug, International AC Input, International AC Blades (NATAM, EU, UK, Australia, China) connected. The RS-485 port uses a female DB-25S type of connector with Send Data outputs on pins 2 and 14, and Receive Data inputs on pins 5 and 17. Protective Ground (pin 1) and Signal Ground (pin 7) are connected through to the RS-232 connector. BB-USOPTL4-2P BB-USOPTL4-4P 0221ds All product specifications are subject to change without notice. BB-485CON 1921dsBB-485CON Specifications Serial Technology Communication 2-channel, RTS control Data Rate 240 kbps (typical) 120 kbps (minimum) RS-232 Connector DB25 male RS-422 Connector DB25 female Power 12 Vdc, 100 mA external power source Source / Requirements (power supply required, not included, sold separately) Power Connector 2.5mm power jack Regulatory Approvals / Standards / Directives FCC Part 15, CISPR 2011/65/EU amended by (EU) 2015/863 Reduction of CE Directives Hazardous Substances Directive (RoHS) EN 55022 + AC Class A Emissions Other EN 61000-6-1 Generic Standards for Residential, Commercial and Light Industrial Environments Schematic