Specifications

2 - 18
Open status
Open ready status
(closed)
Closed status
Initial normal completion X19
OPEN instruction
OPEN instruction complete
device
OPEN instruction complete
device +1
Open error detection
signal X18
CLOSE instruction
CLOSE instruction complete device
CLOSE instruction complete device +1
Open completion signal
(Address: 5000H)
Open request signal
(Address: 5002
H
)
Power-on
One scan
One scan
SYN+ACK
FIN+ACK
FIN
SYN
3)
4)
6)
7)
5)
2)
1)
Parameter
communication
completed
Number Description
1)
After parameter communication, confirm normal completion of the Ethernet module initial processing.
(Initial normal completion signal (X19): ON)
2)
Start the open processing using the dedicated instruction, OPEN.
(Open request signal (address: 5002
H
… b0): ON)
3) The open processing is executed.
4)
• When the open processing completes normally
Data communication is enabled.
• When the open processing completes abnormally
Confirm "Complete status" stored in the control data of the OPEN instruction and perform the recovery
processing.
5) Start the close processing using the dedicated instruction-CLOSE instruction. (Open request signal: OFF)
6) The close processing is executed.
7) Open completion signal turns OFF.