Adding an Encoder

Introduction

In order to use the encoder interface, the Modicon M262 Logic/Motion Controller has a specific hardware encoder interface that can support:

oIncremental encoder

oSSI encoder

For more information on usable function blocks, refer to Modicon M262 Logic/Motion Controller - Encoder Library Guide.

Adding an Encoder

To add an encoder to your controller, select the encoder in the Hardware Catalog. Drag and drop it to the Devices tree on one of the highlighted nodes.

For more information on adding a device to your project, refer to:

• Using the Drag-and-drop Method

• Using the Contextual Menu or Plus Button

Incremental Encoder Configuration

To configure the incremental encoder, double-click the encoder node in the Devices tree.

This table describes the incremental encoder configuration parameters:

Parameter	Type	Value	Default Value	Unit	Description
Power supply
Voltage selection	BYTE Enum	None 5 V 24 V	None	–	–
Power supply monitor	BYTE Enum	Enabled Disabled	Disabled	–	Enable the power supply monitor
General
Input Mode	BYTE Enum	Normal Quadrature x 1 Normal Quadrature x 2 Normal Quadrature x 4 Reverse Quadrature x 1 Reverse Quadrature x 2 Reverse Quadrature x 4	Normal Quadrature x 1	–	Select the period measurement interval
Counting Inputs
A Input
Filter	BYTE Enum	0.000 0.001 0.002 0.005 0.05 0.01 0.08 0.5 1 4 12	0.002	ms	Set the filtering value to reduce the bounce effect on the input
B Input
Filter	BYTE Enum	0	0.002	ms	Set the filtering value to reduce the bounce effect on the input
Preset Input
Z Input
Filter	BYTE Enum	0.000 0.001 0.002 0.005 0.05 0.01 0.08 0.5 1 4 12	0.002	ms	Set the filtering value to reduce the bounce effect on the input

SSI Encoder Configuration

To configure the SSI Encoder, double-click the encoder node in the Devices tree.

This table describes the SSI encoder configuration parameters:

Parameter	Type	Value	Default Value	Unit	Description
Power supply
Voltage selection	BYTE Enum	None 5 V 24 V	None	–	–
Power supply monitor	BYTE Enum	Disabled	Disabled	–	Enable the power supply monitor
Synchronous Serial Interface (SSI)
Transmission Speed	BYTE Enum	100 250 500	250	KHz	Select the speed of data transmission
Number of bits per frame	USINT (8...64)	8	8	–	Set the number of bits per frame (header + data bits + status + parity)
Number of data bits	USINT (8...32)	8	8	–	Set the number of bits to count turn + bits to count points per turn
Number of data bits / turn	USINT (8...16)	8	8	–	Set the number of data bits to count points per turn
Number of status bits	USINT (0...4)	0	0	–	Set the number of bits to be reserved for the status
Parity	BYTE Enum	None	None	–	Select the parity
Resolution reduction	USINT (0...17)	0	0	–	Set the resolution code
Binary coding	BYTE Enum	Binary	Binary	–	Select the binary coding mode

Motion Functions

You can configure specific elements, exclusively for motion applications. For more information, refer to Motion Functions tab.