Array 3313 RS-232C to RS-485 Converter for Multidrop Networks

Product Code: 3313

Professional RS-232 to RS-485 Conversion The Array 3313 RS-232C to RS-485 Converter enables seamless connection between PC serial ports and multidrop RS-485 networks. Designed specifically for Array Electronic loads and power supplies, this converter extends communication range up to 1200 metres whilst supporting up to 32 devices on a single network. Key Technical Specifications Parameter Specification Input Interface RS-232C (DB-9 Male) Output Interface RS-485 (Terminal Block) Maximum Distance 1200m (4000 feet) Network Devices Up to 32 nodes Data Rate Up to 115.2 kbps Power Supply Port-powered from RS-232 Isolation Optical isolation Wiring Quick-Start RS-485 Terminal Block Connections Connect the RS-485 lines using twisted pair cable: Terminal A (Data+) → RS-485 A line Terminal B (Data-) → RS-485 B line Terminal GND → Signal ground Important: Install 120Ω termination resistors at both ends of the RS-485 network for optimal signal integrity. Multidrop Network Configuration The 3313 converter enables PC connection to multiple Array Electronic devices in a daisy-chain topology.

Each device requires a unique address (0-254) for individual control and monitoring. The differential signalling provides excellent noise immunity in industrial environments. Compatible with Array Electronic: 3710A/3711A Electronic Loads 3644A/3645A/3646A Power Supplies 364XA Series DC Power Supplies 371X Series Programmable Loads Installation Notes The converter requires no external power supply when connected to a standard PC serial port. The optical isolation protects connected equipment from ground loops and voltage spikes. LED indicators show power and communication status for easy troubleshooting. RTS control enables automatic transmit/receive switching for half-duplex operation.