Canopen® Stx Api; Stx Functions - Jetter JVM-104-O15 User Manual

Jetter AG
7.2 CANopen® STX API
Specifications
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7.2.1 STX Functions

Application
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JVM-104-O15 User Manual
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CANopen is an open standard for networking and communication, e.g. in the au-
tomotive sector. The CANopen
e.V. (CAN in Automation) and works on the physical layer with CAN Highspeed in
accordance with ISO 11898.
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The CANopen specifications can be obtained from the CiA e.V. homepage at
http://www.can-cia.org.
The key specification documents are:
■ CiA DS 301 - This document is also known as the communication profile and
describes the fundamental services and protocols used under CANopen
■ CiA DS 302 - Framework for programmable devices (CANopen
SDO Manager)
■ CiA DR 303 - Information on cables and connectors
■ CiA DS 4xx - These documents describe the behavior of a number of device
classes in, what are known as, device profiles.
Further information on the subject CANopen
cation-oriented manual „CANopen
Homepage.
STX functions are used in the communication between the JVM-104-O15 and
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other CANopen nodes.
The JVM-104-O15 supports the following STX functions:
Features
CanOpenInit()
CanOpenSetCommand()
CanOpenUploadSDO()
CanOpenDownloadSDO() The function CanOpenDownloadSDO() lets you
CanOpenAddPDORx()
CanOpenAddPDOTx()
Further information about STX functions can be found in the application-oriented
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manual "CANopen STX-API" on our
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protocol has been further developed by the CiA
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STX-API can be found in the appli-
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STX-API" which can be downloaded from our
Description
The function CanOpenInit() lets you initialize
one of the CAN busses.
The function CanOpenSetCommand() lets you
change the heartbeat status of the device itself and
of all other devices (NMT slaves) on the CAN bus.
The function CanOpenUploadSDO() lets you ac-
cess a particular object in the Object Directory of
the message recipient and read the value of the
object. Data is exchanged in accordance with the
SDO upload protocol.
access a particular object in the Object Directory of
the message recipient and specify the value of the
object. Data is exchanged in accordance with the
SDO download protocol.
By calling up the CanOpenAddPDORx() function,
process data, sent by other CANopen
can be entered for reception.
By calling up the CanOpenAddPDOTx() function,
process data can be placed on the bus.
homepage and in the JetSym online help.
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