Examples:
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
XX
XX
Status byte
0XXX.X0XX
0XXX.X1XX
Input byte 2
XX
XX
Input byte 1
XX
XX
Module is still being reset
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 |
‘H’ (0 x 48) |
| 0011.0000 |
Output byte 2 |
| Output byte 1 |
|
‘l’ (0 x 6C) | ‘e’ (0 x 65) |
| |
|
|
|
|
-The transmission request bit (TR) is inverted.
Output byte 0 |
| Control byte |
‘H’ |
| 0011.0001 |
Output byte 2 |
| Output byte 1 |
|
‘l’ | ‘e’ |
| |
|
|
|
|
-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.XXX | XX | XX |
| 0 |
|
|
XX | 0XXX.XXX | XX | XX |
| 1 |
|
|
The data is still being transferred.
Data transfer completed.
-The last 2 characters and the buffer length of 2 are transmitted.
Output byte 0 |
| Control byte |
‘l’ |
| 0010.0001 |
Output byte 2 | Output byte 1 |
XX | ‘o’ (0 x 6F) |
-The transmission request bit (TR) is inverted.
Output byte 0 |
| Control byte |
‘l’ |
| 0010.0000 |
Output byte 2 | Output byte 1 |
XX | ‘o’ |
RS232,TTY,RS485 |
| 8 |
