Specifications

4 - 8
POINT
(1) In order to improve the reliability of data, it is recommended to execute
instructions by setting the execution type to "With arrival confirmation."
(2) If the communication itself is normally completed when the execution type is
set to "No arrival confirmation," the sending is considered as being normally
completed by the sending station even if the contents of the send data are
abnormal.
In addition, even if the contents of the send data are normal, when an
instruction is executed to the same station from multiple stations, a "receive
buffer full error (F222
H)" may occur in the target station but the sending station
completes normally.
(3) When sending data to the same channel of the receiving station, execute the
sending after the receiving station reads data using the RECV instruction.
If the sending station sends data to the same channel of the receiving station
before the receiving station reads data using the RECV instruction, an error will
occur.
CPU (sending station)
Network module CPU (receiving side)
RECV
SEND
Channel 3
Error
Logical channel
(Channel 5)
Network module
SEND