6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL
2)Reception by received data count
When the received data count is set larger than the receive data storage area, the receive buffer memory length (default: 512 words)
(Receive data storage area) > (Data length received from external device)
(Example) When 550 words of data is received through the CH1 interface in three parts when the CH1 interface receive area consists of addresses 600H to 7FFH (default value)
| 1st data |
|
|
| 2nd data |
|
| 3rd data |
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
External device |
| 511 words |
| 39 words |
|
| 472 words |
| 78 words |
|
| 433 words | 117 words |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Q series C24 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reception data read |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
request signal |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
X3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sequence program |
|
|
| INPUT |
|
|
| INPUT |
|
|
| INPUT | |||
|
|
|
|
|
|
|
|
| |||||||
Read data.... | Read data.... | |
1st 39 words and | ||
1st 511 words | ||
2nd 472 words | ||
|
6 - 10 | 6 - 10 |