Ebyte E820-AIO, Руководство пользователя

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2.2 Connection method
2.2.1 RS485 connection method
3. Register configuration table
3.1 ModBus address table
40001—40012、40017—40028、40042—40049 is not used in this device.
ModBus register address table
Address Byte variable names Type Description
30013 2 AI4 input Read only
Unit 0.001mA/0.001V
30014 2 AI3 input Read only
30015 2 AI2 input Read only
30016 2 AI1 input Read only
40029 2
reference voltage for
channel 1
Read/write
Default 2400，Max. 3300，Min 2000，Unit
0.001V
40030 2
reference voltage for
channel 2
Read/write
40031 2
reference voltage for
channel 3
Read/write
40032 2
reference voltage for
channel 4
Read/write
40033 2 ModBus address Read/write 1-250（0xff is the monitoring address）