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Single-chip microcomputer (RXD, TXD interface is TTL level 232, use the chip max485 PLC side must need a program...
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485 is a remote weighing data acquisition method for communication interfaces. When the communication distance is requir...
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485 communication can not be received for the following reasons:The 485 line is incorrectly connected. It includes the i...
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The ka2411 is an integrated circuit chip that is mainly used in low noise operational amplifiers in audio amplifier syst...
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485 communication is A serial communication protocol that requires two signal lines: A line and B line. This communicati...
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No, they operate in differential mode and are protected by isolation and current limiting. Unless the high-voltage power...
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characteristicsTypical serial communication standards are RS232 and RS485, they define the voltage, impedance, etc., but...
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485 meter is based on the single-phase electronic energy meter, adding RS-485 interface, suitable for the bottom of the...
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First of all, check whether the voltage of the circuit board is high. Then check the 485 bus, is there a high voltage in...
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485 Output both ends (A 10. B A there is no change in the voltage output, is abnormal, because the computer industrial...
