User`s manual

RabbitFLEX User’s Manual www.rabbit.com 35

The direct output has the advantage of being a push/pull driver. It has the same current capacity as a gen-

eral output on the Rabbit: 6.8 mA, sinking or sourcing. A direct PWM output could be used as a control for

a high impedence device.

For applications that need more current than is supplied with a direct PWM output, select one of the sink-

ing drivers or the sourcing driver option. The driver options add current to the PWM output, giving it the

ability to drive an low impedence load such as a motor or a solenoid.

4.3.10 Digital Inputs

Digital input circuits are available on connectors J1 through J5, pins 1 through 8. For a dedicated digital

input, you may select from the following threshold voltages or special purpose inputs:

• 1.4 V

• 2.8 V

• 4.4 V

• Bidirectional Logic

• Contact Input

4.3.10.1 Digital Input 1.4 V Threshold

This section presents the circuit schematic and the characteristics for the 1.4 V threshold digital input.

Figure 4-11 Digital Input 1.4 V Threshold Circuit

DIGITAL INPUT, 1.4 V threshold

VERSION 6.01

100 kW

I/O

Digital Interface

Cell