Elo TouchSystems 2201L Especificações descarregar pdf (Página 31)

E271-2201 PC-Bus Controller 21

None (SmartSet Mode) not installed (shipped setting)

E271-141 installed

8- and 12-Bit Modes

When E271-141 emulation mode is enabled, J11 selects whether 8-Bit or 12-Bit

Mode is emulated.

Mode J11

8-Bit installed

12-Bit not installed

The 12-Bit Mode offers greater resolution. 8-bit coordinates are simply 12-bit

coordinates shifted right four bits. Elo driver software internally shifts 8-bit

coordinates left four bits. This way, new calibration points are not required when

switching between 8- and 12-Bit Modes. Calibration is discussed in Chapter 4.

In 8-Bit Mode, a single two-byte transfer is required to read both the X and Y

coordinates. In Interrupt Mode, a single interrupt must be serviced for each

coordinate pair.

In 12-Bit Mode, two separate two-byte transfers are required to read the X and Y

coordinates. In Polled Mode, each polling results in one two-byte transfer. Two

pollings are required for each coordinate pair, one for X and one for Y. In

Interrupt Mode, two interrupts must be serviced for each coordinate pair.

Reserved Jumpers

Jumper J6 on the E271-2201 controller is reserved. It should not be installed.

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Elo TouchSystems 2201L Especificações Página 31