Mitsubishi Electric QJ71E71-100 User Manual page 146

● The items configured in the open setting become enabled when Open completion signal of an E71 is started up.
● When the buffer memory area that stores Fixed buffer reception status signal is turned off and on, execute the BUFRCV
instruction.
● When abnormal data is received, Fixed buffer reception status signal does not turn on. In addition, data is not stored in
the fixed buffer number 1 area.
(2) No procedure
The following is the receive process performed in the fixed buffer number 1 area for the connection number 1.
Initial normal completion
signal X19
Open completion signal
(address: 5000
BUFRCV instruction
BUFRCV instruction
completion device
BUFRCV instruction
completion device + 1
Fixed buffer reception status signal
(Address: 5005H [b0])
144
Initial process Open process
1
[b0])
H
Receiving data
2
4
ACK
(TCP only)
3
5
1 scan