HP DesignJet ColorPro CAD Manual do Utilizador descarregar pdf (Página 148)

Functional Overview6-28

Firmware

Interface with mechanism

The following diagram shows the interface between the firmware and the hardware :

Paper Motor control is an open-looped control. The firmware does not know the exact

position or the size of the paper and relies on the OOPs flag to confirm the presence

of paper.

Service Station control is also an open-looped control. There is no feedback to the

firmware from the Service Station.

Carriage Control is a closed-loop control. The Carriage PCA is enabled by the

encoder strip to read and send data back to the firmware.

Pen information is also controlled by a closed loop. The firmware is therefore able to

receives printing data such as pen firing parameters, pen ID and pen temperature from

the active pen.

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HP DesignJet ColorPro CAD Manual do Utilizador Página 148