Jetter JVM-407B-HMI, User Manual

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130 Jetter AG
6 CANopen® STX API
STX function: CanOpenAddPDOTx()
By calling up the CanOpenAddPDOTx() function, process data can be
deposited on the bus.
However, that should not mean that other CANopen® devices on the bus can
also read this process data.

Only if the CANopen® devices on the bus are in state operational , the
PDO telegram is transmitted.
 As soon as there are any changes to the process data, another PDO
telegram is transmitted immediately.
 The smallest time unit for the Event Time is 1 ms.
 The smallest time unit for the Inhibit Time is 1 ms.
 Any unused bytes of a telegram are sent as null.
Function CanOpenAddPDOTx(
CANNo:Int,
// Number of the bus line
CANID:Int, // CAN identifier
BytePos:Int, // Starting position of the data to be sent
DataType:Int, // Data type of the data to be sent
// Data length of the global variable VarAddr
DataLength:Int,
// Global variable holding the value to be sent
const ref VarAddr,
// Cycle time for sending a telegram
// Event time
EventTime: Int,
// Minimum interval between two transmitted messages
// Inhibit time
InhibitTime: Int,
Paramset: Int,
// Bit-coded parameter
) :Int;
The CanOpenAddPDOTx() function has got the following parameters:
Parameter Description Value
CANNo CAN bus number 0 ... CANMAX
CANID CAN identifier 11-bit
CAN identifier 29-bit 0 ... 0x7FF
0 ... 0x1FFFFFFF
BytePos Starting position of data to be
sent
0 ... 7
DataType Data type of data to be sent 2 ... 13, 15 ... 27
DataLength Data length of the global variable
VarAddr
VarAddr Global variable into which the
value to be sent is entered
Introduction
Notes
Function declaration
Function parameters