WAGO 750-650, Руководство пользователя

Страница: 14 / 20

14 • 750-650 (/xxx-xxx) [Serial Interface RS 232 C]
Datatransfer
WAGO-I/O-SYSTEM 750
Busklemmen
2.1.1.9.1 Example
The module is initialized.
The initialization bit in the control byte is set.
Output byte 0 Control byte Output byte 2 Output byte 1
0x00 '0000.0100' 0x00 0x00
After the initialization has been executed, the status byte will give back
000.0100.
Input byte 0 Status byte Input byte 2 Input byte 1
XX '0XXX. X0XX' XX XX Module is still being
reset.
XX '0XXX. X1XX' XX XX Initialization
completed.
Sending of the data string "Hello”
The first 3 characters and the buffer length of 3 are transmitted.
Output byte 0 Control byte Output byte 2 Output byte 1
"H" (0x48) '0011.0000' "1" (0x6C) "a" (0x60)
The transmission request bit (TR) is inverted.
Output byte 0 Control byte Output byte 2 Output byte 1
"H" '0011.0001' "1" "a"
As soon as TR=TA, the rest of the data can be sent.
Input byte 0 Status byte Input byte 2 Input byte 1
XX '0XXX.XXX0' XX XX The data is still
being transferred.
XX '0XXX.XXX1' XX XX Data transfer
completed.