Andivi TRC-d 기술 매뉴얼 - 페이지 13
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Andivi – TRC-D – Technical Manual
NETWORK SPECIFICATIONS
Transmission
• Physical layer: RS485 (2 wires)
• Baud rate: 19200 bps
• Data format (RTU mode): 1 start bit, 8 data bits, no parity check, 2 stop bit
Modbus
• Address range: 1~247.
• Suppose function code: 1, 2, 3, 4, 5, 6, 15, 16, 23.
• Data format: address | function code | data 1 | ... | data n | CRC-16 low byte | CRC-16 high byte
• Data bytes: 252 bytes (max.)
• Temperature representation: the original temperature degree value has to be multiplied by 10 to be saved in the register.
• Examples:
25.5°C is represented by: 00 FF (in hex) i.e. 255 (in dec.)
•
5.0°C is represented by: 00 32 (in hex) i.e. 50 (in dec.)
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08/14, fw. ver. V1.2, V1.3