Mitsubishi Electric MELSEC iQ-RJ71C24-R2 - Processing of Transmitted;Received Data When Simultaneous Transmissions Occur

4 DATA COMMUNICATION USING BIDIRECTIONAL PROTOCOL
4.3 Processing when Simultaneous Transmission is Performed during Full-Duplex Communications
105
4
Processing of transmitted/received data when simultaneous
transmissions occur
The following shows the C24 communication data processing based on the settings of 'Send data' and 'Receive data' with
Engineering tool by using the examples.
For details on the time check timer 1 (response monitoring time) shown in the figures, refer to the following section.
Page 231 Response Monitoring Time (timer 1) Setting
Send data: Enable, Receive data: Enable
Send data: Disable, Receive data: Disable
Send data: Enable, Receive data: Disable
Send data: Disable, Receive data: Disable
E
N
Q
E
N
Q
A
C
K
A
C
K
Ò-1
Ò-2Ó-1
Ó-2
Sum check
code
Arbitrary data
Target device
C24
Sum check
code
Time check
(timer 1)
Arbitrary data
E
N
Q
E
N
Q
A
C
K
Ò-1
Ó-1
Ó-2
Sum check
code
Arbitrary data
Ignores the received
data of Ò-1.
Target device
(Simultaneous transmission
error occurred.)
C24
Sum check
code
Arbitrary data
E
N
Q
E
N
Q
A
C
K
Ò-1
Ò-2Ó-1
Sum check
code
Arbitrary data
Target device
Ignores the received
data of Ó-1.
C24
Sum check
code
Time check
(timer 1)
Arbitrary data
E
N
Q
E
N
Q
Ò-1
Ó-1
Sum check
code
Arbitrary data
Ignores the received
data of Ò-1.
Target device
Simultaneous transmission error
occurred.
Ignores the received data of Ó-1.
C24
Sum check
code
Arbitrary data