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Features:

PLC board 24 points input 16 points relay output X0～X5 are high-speed input, can connect 1 way AB encoder, default 12K, select 60K The board uses DC 24V power supply, do not directly input AC or 220V voltage.

AD input read:

Analog read command: RD3A AD range setting: D0 upper limit D1 lower limit (occupies 2 registers) D0 is not a fixed register, other registers can be used When the above program example: When the data in D10 = 500, it means that 5V analog signal input is read Example: When the data in D10 = 1000, it means that 10V analog signal input is read When the range is not set: 0-10V corresponds to 4095 0-10V range setting skills: Case ⒈ For example, a 60 kPa pressure sensor, then we set the upper limit range (D0) to 6000 and the lower limit range (D1) to 0 When D10 data = 3000 means the current pressure is 3 kPa When D10 data = 5000 means the current pressure is 5 kPa Case ⒉ For example, an 8-meter water level sensor, then we set the upper limit range (D0) to 800 and the lower limit (D1) to 0 When D10 data = 520 means the current water level of 5.2 meters When D10 data = 465 means the current water level of 4.65 meters 4-20MA range setting skills: case ⒈ for example a 50 kPa pressure sensor, then I set the upper limit range to 5000 and the lower limit range to -1250 (the lower limit range is set to minus 1 of 4) When D10 data = 3500 means the current pressure is 3.5 kPa When D10 data = 4000 means the current pressure is 4 kPa Note: Because the current signal of this PLC is 0-20 mA, so when setting the range, the lower limit range must be set to a negative number (MOV K-1250 D1) Since the initial state of the 4-20 mA sensor will be 4 mA, all the lower limit range is set to 1/4 of the upper limit, which is equivalent to removing 4 mA!

NTC temperature read

NTC modification description: AD can be changed to thermal resistance type Temperature input: NTC 10K (-40-150 degrees Celsius) or NTC 50K (-40 ~ 209 degrees Celsius) can be modified up to 6 channels Need to buy (NTC-10K thermistor with B value of 3950) (Or NTC-50K thermistor with B value of 3950) (Note: When the probe wire is too short, please do not connect other electronic wires. Only wires with low impedance and strong anti-interference ability can be applied. Otherwise, it will cause temperature instability. It is recommended to set the length of the wire when purchasing the probe) NTC temperature reading without setting range The reading data divided by 10 is the actual temperature When D10=500, it means the current temperature of the first channel is 50° When D10=437, it means the current temperature of the first channel is 43.7° When D11=800, it means the current temperature of the second channel is 80° When D11=-200, it means the current temperature of the second channel is -20°.

DA analog output:

Analog output command: WR3A Range setting: It is the same as the analog input setting method. When the range is not set, 0-10V corresponds to 4095 Column: When the upper limit range of D0 is set to 1000 (the lower limit can be set to 0 by default) When D10=500, DA0 outputs 5V voltage When D10=800, DA0 outputs 8V voltage When D11=340, DA1 outputs 3.4V When 11=550, DA1 outputs 5.5V