Modbus RTU Module N4D3E16 DC 12V 24V 16 Inputs 16 Outputs RS485 for Programmable Logic Controllers and Remote Control 1 Modbus RTU RS485 module with 16 input channels and 16 output channels, DC 12V 24V 6 photoelectrically isolated input ports (NPN active low level) Applications: I/O expansion board for programmable logic controllers, smart homes, home automation, PTC cameras, security surveillance, identification systems, network cameras, LED drivers, automatic curtain control Modbus RTU instructions, supports 3 to 6 function codes (some registers support 16 function codes) 1. Operating Voltage: 6.5-30V DC (7.5V, 9V, 12V, 15V, 24V) 2. Operating Current: 8-50 mA 3. 16 photoelectrically isolated input ports (NPN, active low level) 4. 16 Darlington output channels (ULN2803 NPN output) 5. 6 commands: "Open", "Close", "Instantaneous", "Self-Latch", "Interlock", "Delay" 6. The 16 inputs can remotely control the 16 outputs of another board via the RS485 bus (the corresponding registers must be configured) 7. MODBUS RTU instructions, supports 306 function codes (some registers support 16 function codes) 8. Under the "Delay" command, the maximum delay is 255 seconds; 9. The MODBUS command can be executed in the serial port command-line interface (Serial Port Wizard) OR via "Modbus Poll", then press Enter; 10. In MODBUS control mode, up to 64 devices can be supported in parallel. 11. The default bit rate is 9600 bits/s. Jumper-selectable baud rate: 2400, 4800, 9600, 19200 bps 12. Maximum load: The maximum load current for each channel is 300 mA DIN rail enclosure specifications: 1. Model: UM72 2. Installation: DIN35 and C45 guide rails 3. Width: Compatible with UM72 wide PCBs (72 mm) 4. Insulation level: Flame retardant level VO 5. Backplane length: Compatible with 100 mm PCBs Note: Appearance, color, and printed characters may vary from batch to batch, without affecting usability. Material: PCB