Micro-S CPU Series Analog Interface
Micro-S Analog Interface
| Analog I/O Interface | ||
|---|---|---|
| Image | Pin Name | Description |
 | AD1 | Analog Input Channel 1 Terminal |
| AD2 | Analog Input Channel 2 Terminal | |
| DAV1 | Analog Voltage Output Channel 1 Terminal | |
| DAV2 | Analog Voltage Output Channel 2 Terminal | |
| DAI1 | Analog Current Output Channel 1 Terminal | |
| DAI2 | Analog Current Output Channel 2 Terminal | |
| ACOM | Analog I/O COM | |
ACOM terminal is an electric potential of the entire embedded analog I/O signals. For the transmission of the embedded analog I/O signals, ACOM must be wired together.
Analog Input Select Switch
| Analog Input Voltage/Current Select Switch | ||
|---|---|---|
| Switch | Measuring Voltage (Switch OFF) | Measuring Current (Switch ON) |
 |  |  |
Internal analog input port uses a 250Ω precision resistor. Connecting the shunt resistor (250Ω) by controlling the analog input select switch will enable the measurement of current (0mA ~ 20mA).
Depending on the ON/OFF state of the switch, the impedance value may change.
The switch must be switch to ON only when current is measured.
To measure voltage, the switch must be OFF.