Pull-down Resistors in the 4mA to 20mA Current
Range
1. In the current/voltage mode, the analog input
does not provide over-voltage protection.
Exceeding the limits in the electrical code may
result in permanent damage to the input port.
2. In current mode, the pull-down resistance
depends on the range of the input current.
2.2.3.1. Non-differential Analog Input
The following figures show how the analog sensor can be connected to a
non-differential output.
Voltage mode
Current mode
2.2.3.2. Differential Analog Input
The following figures show how the analog sensor is connected to the
differential output. Connect the negative output to GND (0V), and it can
work like a non-differential sensor.
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