Motherboard By FTVOGUE

• Onboard 4M crystal oscillator, the socket crystal frequency can be replaced at any time.
• The 4-bit independent keyboard is connected to RB0 RB1 RB2 RB3. External 5V DC power interface (send USB power cable without additional purchase).
• 8 LEDs are connected to the RD port. When the J3 is plugged in, the LED is enabled. J3 is unplugged and the RD port is completely released.
• Standard RS232 communication interface, microcontroller board and computer communication interface. ICSP programming simulation interface (can be connected to K150 PICKIT2 PICKIT3 ICD2 and other tools).
• VCC GND pin header power extension interface for access or -out of 5 volt power supplies. All IO ports of the MCU are easily extended by using pin headers.

• The working voltage of this relay module board is 12V DC and the standby current is 11mA. Under MODBUS command mode, this relay module can support up to 64 devices in parallel.
• MODBUS commands can be done in HyperTerminal serial (serial assistant) or enter \"Modbus Poll\", and MODBUS RTU command control mode, the maximum delay is 255 seconds.
• MODBUS (HEX) command mode, can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically adds the CRC), PLC or MCU process control.
• This relay module has 6 commands: \"Open\", \"Close\", \"Momentary\", \"Self-Locking\", \"Interlock\" and \"Delay\".
• We strive to provide you with the highest quality product and best customer experience. If you are not completely satisfied, please feel free to contact us at any time.

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