F12=3 模拟电流／电压端子（IS-GND）的电流输入设定，范围：DCO-20mA
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GND: This pin is the combined control circuitry and power ground.
该引脚是综合控制电路和电源地。
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Note that as long as the external power supply is active, the GND pin may not be floating.
注意，只要外部电源提供是活跃的，GND别针可能不漂浮。
CES123, readback is correct, call when ready (for GND).
东方123，复诵正确，地面准备好叫。
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