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date 12/14/2018

│ page 3 of 9

CUI Inc

│ SERIES: AMT22 │ DESCRIPTION: MODULAR ABSOLUTE ENCODER

Commands:

Read Position

Hex command sequence: 0x00 0x00

The command to read position is 0x00, 0x00 because the encoder will always respond with the current position when SPI is

accessed. The encoder observes the second byte for extended commands.

Extended Commands:

Reset Encoder

Hex command sequence: 0x00 0x60

The encoder responds with the current position over the transmission then immediately resets. Observe the power on time

when using this command. Encoder must be stationary to power back on.

Set Zero Point

Hex command sequence: 0x00 0x70

The encoder responds with the current position over this transmission then saves the current position into memory and

performs a reset. Encoder must be stationary for this command. Observe the power on time when using this command.

SERIAL INTERFACE (CONTINUED)

The AMT22 encoder operates in two modes: programming, and SPI mode. To enter programming mode for use with

AMT Viewpoint™ the slide on the bottom of the encoder must be moved to the programming position. Slide the switch

to the left position before connecting encoder to AMT Viewpoint™. Once configuration in AMT Viewpoint™ is completed,

disconnect encoder and return switch to the standard run mode position before connecting encoder to system. Switch must

be in proper mode for programming or SPI before power is connected to device.

AMT VIEWPOINT

™ OPERATION

A

Run Mode

Program Mode

For more information, please visit the product page.