Analog Input Ai Calibration; Switch Output Do; Switch Output Do Description - Ebyte M02-XACX0420 User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd.

The address of the AI engineering quantity register is 0x0064 to 0x0067, the register type

is input register, and the read function code is 0x04. The value returned in this method is

2 bytes representing one channel, and the value read ranges from 0 to 25000. The

calculation method of current size is 0 ~ 25000 corresponding to 0 ~ 25mA.

4.1.5 Analog input AI calibration

When reading AI measurement current and the error is large, the calibration can be done by

setting the high point calibration register and low point calibration register of each channel.

AI Each channel has an independent high (low) point calibration register. The addresses of the

high point calibration register are 0x0190 ~ 0x0193, and the addresses of the low point calibration

and 0x10。

The calibration method can input a precise current signal for the AI channel and write the value

for calibration. For example, if the AIx channel corresponding to the device is calibrated and the

actual input current is 20mA, read the original AI value of the AIx channel and write the original

value into the high calibration register of the AI channel. General low point calibration can be set to

0 by default.

Note: this function is used only when the error is large. It is not recommended for general use。

4.2

Switch output DO, with level mode, pulse mode, follow mode (follow DI only). C type relay

output (normally open + normally closed), single output support maximum load (contact capacity) of

30V/10A or 250V/10A.

Switch output DO, with level mode, pulse mode, follow mode (follow DI only). C type relay

output (normally open + normally closed), single output support maximum load (contact capacity) of

30V/10A or 250V/10A。

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