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date 10/13/2015

│ page 8 of 9

CUI Inc

│ SERIES: AMT11 │ DESCRIPTION: MODULAR INCREMENTAL ENCODER

Command

Action

Use

0

This command sends an ascii ‘0’ (hex

value 0x30).

This zeros the encoder and sets the index at the current angular

position. This position is stored in non-volatile memory and will remain

present until a zero command is set again or encoder is reprogrammed

via AMT Viewpoint™.

Q

This command sends an ascii ‘Q’ (hex

value 0x51).

This command restarts the encoder as if it were power cycled.

APPLICATION NOTES

Pin

Description

Connection

TX_ENC+

This is the pin that the encoder

transmits serial data on.

Connect this pin to the receiver input of your serial/UART interface.

RX_ENC+

This is the pin that the encoder

receives serial commands on.

Connect this pin to your serial/UART interface transmitter output.

MCLRB

This pin is used to force the encoder

into reset for reprogramming via the

AMT Viewpoint™ application.

Connection of this pin is not required for the above serial commands.

45

Command: 0 (hex: 0x30, binary: 0b00001100)

Start

0123

Response: \r (hex: 0x0d, binary: 0b10110000)

Stop

Stop

7

TX_ENC+

Start

0123456

RX_ENC+

67

The AMT11 series encoder is designed to operate with a serial UART interface. This interface allows the encoder to be configured and

programmed by the AMT Viewpoint™ application. Along with programming, the AMT Viewpoint™ application uses the serial interface

for diagnostics and index alignment. Below are instructions on how to use the serial interface for position zeroing.

Serial Commands

Table 1

Serial Pins

Table 2

Serial Timing Diagram

Figure 2

The serial interface operates at 115200 baud with 8 data bits, no parity, and 1 stop bit, and 1 start bit. This is the standard UART

protocol. Data lines TX_ENC+ and RX_ENC+ are high when inactive.

SERIAL INTERFACE

For more information, please visit the product page.