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Technical Data - V5

Technical Data - V5

2026-02-11

Technical Data

Feature

Description

Feature

Description

Max. number of cyclic input data (Tx) of all slaves

254 bytes (including Connection Control and IO Status)

Max. number of cyclic output data (Rx) of all slaves

254 bytes (including Connection Control and IO Control)

Maximum number of cyclic input data

(Tx) of all slaves

128 bytes (including Connection Control and IO Status)

Maximum number of cyclic output

data (Rx) of all slaves

 128 bytes (including Connection Control and IO Control)

Maximum number of slave devices

Use Case A: 1
Use Case C: 8

Maximum number of applicable SERCOS addresses

1 … 511

Minimum cycle time

250 µs (if maximum number of cyclic produced data (Tx) of all slaves is <= 64 bytes, and maximum number of cyclic consumed data (Rx) of all slaves is <= 64 bytes)

Topology

Line and ring

Communication phases

NRT, CP0, CP1, CP2, CP3, CP4

Acyclic Communication (Service Channel)

Read/Write/Standard Commands

Baud rate

100 MBit/s

Data transport layer

Ethernet II, IEEE 802.3

Supported SERCOS III version

Communication Specification Version 1.1.2

Supported SERCOS Communication Profiles

SCP_FixCFG Version 1.1.1

SCP_VarCFG Version 1.1.1

SCP_VarCFG Version 1.1.3

Supported User SCP Profiles

SCP_WD Version 1.1.1

SCP_Diag Version 1.1.1

SCP_RTB Version 1.1.1

SCP_Mux Version 1.1.1

SCP_Sig 1.1.1

Supported FSP profiles

FSP_IO

FSP_Drive

SCP Sync support

yes

SCP_NRTPC support

yes

S/IP support

yes

Identification LED feature supported

yes

Storage location of object dictionary

mixed mode

Restrictions

  • Max. 2 connections: 1 for consumer and 1 for producer

  • Modifications of the Service-Channel Object Dictionary are volatile after reset (if resides on device)

  • Cross communication not supported yet

  • UCC Communication: Second DPM Channel (“Ethernet Interface Task”) is not available on all hardware

  • Clock parameters ulDTDivClk  (Contents of DTDivClk register) and ulDivClkLength  (DivClk Length) are no longer adjustable (since V3.1). ulDivClkLength is now always set to the fixed value 1 μs. In Div_Clk mode 0 it is not possible any more to configure aperiodic signals. ulConClkLength has now a maximum of 655350 ns.

For more information please see the product manual.

Firmware Functions

The real-time protocol stack is fully integrated into a netX firmware for specific use case in order to provide a common set of netX firmware functions accross different protocol variants:

Firmware Variants

Use Case A

Use Case B

Use Case C

Firmware Variants

Use Case A

Use Case B

Use Case C

Use Case summary

netX90 COM CPU firmware for small footprint, low cost and function optimized slave devices

  • no external SPI / SQI Flash required for COM CPU

  • no external SDRAM required for COM CPU

same as Use Case A, but netX90 APP CPU

  • uses external SPI Flash

  • may use external SDRAM

full featured firmware for highest function requirements

  • external SDRAM is required for COM CPU

  • external SPI Flash is required for COM CPU

netX support

  • netX90

  • netX90 with ext FLASH

  • netX90 with ext SDRAM and ext FLASH

FW structure

Host Interface

Dual Port Memory interface with following channels:

  • Channel 0 - Real-Time Ethernet Protocol API

    • exchange cyclic IO data

    • use acyclic protocol services

  • Channel 1 - Network Services

    • Socket API - Enables opening a communication socket using the integrated TCP/IP stack resources, i.e. same MAC address

    • Ethernet (NDIS) API - Enables sending and receiving Ethernet frames using a separate MAC address, i.e. application host with its own TCP/IP stack

    • Web API - Enables forwarding specific URL (HTTP GET/POST) requests to user applications, e.g. to build custom webpage contents

Diagnostic Interface

netX Diagnostic and Remote Access is supported via COM UART

Integrated Flash File System

N/A

N/A

power-fail safe flash file system on external SPI flash

Remanent Data Storage

Power-fail safe storage of up to 16KB of protocol remanent data in netX90 internal flash

Power-fail safe storage of protocol remanent data in dedicated partition in extenal SPI flash.

Size and position of remanent storage area shall be configured in FDL.

Device Data

device production data (Serial number, MAC address, production data etc.) shall be stored in FDL in netX90 internal flash

Firmware Transfer

  • via integrated web server

  • via Host Interface (DPM, SPM)

Note:

due to limited size (max. 380KB) of FW update area in internal flash, only following files can be transfered:

  • individual firmware files (i.e. comfw.nxi or appfw.nai) if the size of the a file is less that 380KB

  • max. 380KB big FWUPDATE.zip file with predefined structure

  • via integrated webserver and Web API  (DPM Channel 1)

  • host application need to handle storage of the firmware in external SPI flash

to netX flash file system located on external SPI Flash

Firmware Update

Firmware check and installation supported through calling the Maintenance Firmware

  • from internal netX90 flash

  • from external SPI flash

  • from Flash File System located on external SPI Flash

Configuration

by sending configuration packets to the firmware via Host Interface

N/A

N/A

or by using Communication Studio configuration database file from local flash file system

Integrated Basic Webserver

The basic web server has the following features:

  • \netx  - Provides a graphical user interface to other functions (diag, firmware, reset, etc.)      

  • \netx\diag  - Provides information on the netX device (current uptime, MAC address, device   number, serial number, etc.

  • \netx\firmware  - Enables uploading a new firmware update file to netX flash

  • \netx\reset  - Initiates a netX reset cycle, i.e. to install a newly uploaded firmware

  • \  - URL requests are forwarded to the user application via DPM (web interface API)

Webserver extension

N/A

N/A

Basic web server is extended with functions that provide access to the content files on a local Flash file system (SQI Flash).

  • \netx\files  - Enables streaming of custom web content according to media types (i.e. txt, js, xhtml, jpeg, json, etc.) located in the Flash file system

Tag List Options

Firmware supports certain modification of the functionality via Tag List, in particular:

  • Webserver port number or deactivation

  • Activation of Ethernet Interface in DPM Channel1

  • Selection of target for remanent data storage (netX local or external host)

  • Profinet protocol stack configuration parameters

HW Sync Signal

supported via netX signal XC_TRIGGER0/1

Protocol Specific LED Indicators

Network specific status indicators with COM0 / COM1 LEDs:

  • Sercos LED

Secure Boot

supported by Sercos Slave V5.2.0.0 and later, see Support of Secure Boot with netX90 for more details

Limitations

  • FW functions are limited by available internal RAM / Flash

  • COM firmware size is limited to max. 500KB

  • FW functions are limited by available internal RAM / Flash

  • COM firmware size is limited  to max. 880KB