EtherCAT Sync SDO Upload

Read data synchronously from slave device represented by service data object

• Library:

• Simulink Real-Time / EtherCAT

• 

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Description

The EtherCAT Sync SDO Upload block selects a CANopen register by Index value in the specified EtherCAT^® slave and sends a read request. The block then waits until it receives a response or until the timeout period is over.

The response to an operation takes several ticks of the main task sample time. Assign the synchronous blocks a sample time slower than the main task sample time.

Ports

Output

Data — Data received from slave device

numeric

Returns data received from the EtherCAT slave device.

Error — Report an EtherCAT network error

0 | integer

If no error occurs, this port transmits 0. Otherwise, it transmits a nonzero value. For a list of error codes, see EtherCAT Error Codes.

Parameters

Index — Index of CANopen register

integer

Specify the hexadecimal (for example, 0x7) or decimal index of the CANopen register.

If you specify an invalid index, the block returns a nonzero value through the Error output.

Programmatic Use

Block Parameter: index

Subindex — Subindex of CANopen register

integer

Specify the hexadecimal (for example, 0x7) or decimal subindex of the CANopen register.

If you specify an invalid subindex, the block returns a nonzero value through the Error output.

Programmatic Use

Block Parameter: subIndex

Data Type — Data type of CANopen register

double (default) | single | int8 | uint8 | int16 | uint16 | int32 | uint32 | boolean

From the list, select the data type of the CANopen register.

If you select a data type that does not match the type of the entry, the block returns a nonzero value through the Error output.

Programmatic Use

Block Parameter: sig_type

Dimension — Dimension of CANopen register

1 (default)

Specify the row and column dimension of the CANopen register.

Enter the vector length as found in the CoE description for the slave in its manual.

Programmatic Use

Block Parameter: sig_dim

Device index — EtherCAT network identifier

0 (default) | 0-11

To associate a block with an EtherCAT network, enter the Device index value from the EtherCAT Init block representing that network into the Device index for the block.

Programmatic Use

Block Parameter: device_id

Device Name — Name of device that contains CANopen register

character vector

From the list, select the name of the device that contains the CANopen register.

The block populates this drop-down list with the contents of the configuration file.

Programmatic Use

Block Parameter: selected_slave

Sample time — Sample time of block

-1 (default) | numeric

Enter the base sample time or a multiple of the base sample time. -1 means that the sample time is inherited.

Programmatic Use

Block Parameter: sample_time

Timeout — Time to wait for response from slave

numeric

The maximum number of milliseconds to wait for a response before returning a timeout error.

Programmatic Use

Block Parameter: timeout

Model Examples

EtherCAT Protocol with Beckhoff Analog IO Slave Devices EL3062 and EL4002

Communicate with EtherCAT devices using the Beckhoff® analog I/O terminals EL3062 and EL4002.

Open Script

EtherCAT Protocol with Beckhoff Digital IO Slave Devices EL1004 and EL2004

Communicate with EtherCAT devices using the Beckhoff digital I/O terminals EL1004 and EL2004.

Open Script

EtherCAT Protocol Sequenced Writing SoE Slave Configuration Variables

Use SoE blocks and a simple state machine to write configuration values to variables that can only be written before going to EtherCAT Op state.

Open Script

EtherCAT Protocol Sequenced Writing CoE Slave Configuration Variables

Use CoE blocks and a simple state machine to write configuration values to variables that can only be written before going to EtherCAT Op state.

Open Script

EtherCAT Protocol Detect Network Failure and Reset

Use the EtherCAT Notifications block to detect a failure in the connected network and to restart the network when the failure is corrected.

Open Script

EtherCAT Protocol Motor Velocity Control with Accelnet Drive

Control the velocity of a motor by using EtherCAT communication.

Open Script

EtherCAT Protocol Motor Position Control with Accelnet Drive

Control the position of a motor by using EtherCAT communication.

Open Script

Generate ENI Files for EtherCAT Devices

Generate EtherCAT network information (ENI) files to use in Simulink® Real-Time™ with EtherCAT devices.

Open Script

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2020b