Jetter JVM-407B-HMI, Руководство пользователя

Страница: 113 / 300

Jetter AG 113
JVM-407B CANopen® STX API
STX function: CanOpenUploadSDO()
The function CanOpenUploadSDO() lets you access 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. Supported
transfer types are segmented (more than 4 data bytes) and expedited (up to
4 data bytes).
Function CanOpenUploadSDO(
CANNo:Int, // Number of the bus line
NodeID:Int, // Device ID
wIndex:Word,
SubIndex:Byte,
DataType:Int,
// Type of the data to be received
// Data length for the global variable DataAddr
DataLength:Int,
// Global variable into which the received value is entered
const ref DataAddr,
ref Busy: Int, // Status of the SDO transmission
) :Int;
The CanOpenUploadSDO() function has got the following parameters:
Parameter Description Value
CANNo CAN bus number 0 ... CANMAX
NodeID Node ID of the message
recipient
1 ... 127
wIndex Index number of the object 0 ... 0xFFFF
SubIndex Subindex number of the object 0 ... 255
DataType Type of data to be received 2 ... 27
DataLength Data length of the global variable
DataAddr
DataAddr Global variable into which the
received value is to be entered
Busy Status of the SDO transmission
Introduction
Function declaration
Function parameters