Eleven PPI chips (82C55) provide a total of 264 I/O lines. Of these, 240 lines are buffered by solenoid drivers. The high-voltage I/O lines are hardware configurable as inputs or outputs. The inputs can take up to 35V DC. The outputs are capable of sinking 350 mA at 50V per line, and they can directly drive solenoids, relays, or lights.
Two channels of RS-232 drivers, one optional RS-485 driver, and a 5V linear regulator are on-board. These can be used to power the P300 as well as any processor board installed upon it. With the default 5V linear regulator, the P300 requires 8.5V to 12V DC power supply. An optional switching regulator can be installed to provide high efficiency regulation without generating heat for up to 35V DC power input, accommodating this controller for industrial environments.
The P100 is a smaller and less expensive controller similar to
the P300. It is still an excellent controller for applications
requiring large numbers of digital I/O. It also includes 2
quadrature decoders as well as 7 solenoid drivers, making it
versatile enough for other applications such as mobile control.
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