CUI DEVICES | SERIES: AMT11 | DESCRIPTION: MODULAR INCREMENTAL ENCODER

date 08/05/2022 | page 8 of 9

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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

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