Lenze Global Drive PLC Developer Studio - Manual (Page 16)

LenzeFpiDrv.lib function library
Functions
3.1 Initialisation (L_Rs232Open)
3−1
L
LenzeFpiDrv.lib EN 1.1
3 Functions
3.1 Initialisation (L_Rs232Open)
DWORD L_Rs232Open (wDrvNr, dwBaudrate, byNumberOfDataBits,
byNumberOfStopBits, byParity)
The interface must be initialised with the required transfer parameters using this function before it is
possible to work with the FP interface.
Note!
·
After the initialisation has been completed successfully, the automation interface (AIF) only
works with the FP interface.
·
Other AIF modules (keypad, INTERBUS−S, PROFIBUS−DP, etc.) will only be accepted after
execution of the function L_Rs232Close.
·
If this function is called up again, the interface can be changed over to other transfer
parameters. This however results in a cancellation of all existing send and receipt orders!
L_Rs232Open
wDrvNr
dwBaudrate
byNumberOfDataBits
byNumberOfStopBits
byParity
Fig. 3−1 Initialisation (L_Rs232Open)
Transfer parameter
Identifier Data type Possible settings Info
wDrvNr Word 30 AIF interface
dwBaudrate Double Word 600, 1200, 2400, 4800
9600, 19200, 38400 Baud rate
byNumberOfDataBits Byte 7 or 8 Number of data bits*
byNumberOfStopBits Byte 1 or 2 Number of stop bits
byParity Byte 0: None
1: Even
2: Odd Parity*
* When using 7 data bits, a parity bit will always be created so that the setting No parity"
(byParity = 0) is not admissible!