Mitsubishi MELSEC Q Series Programming Manual page 1261

Number Name Meaning
Stores
Reception
SD1286 reception
status signal
status
Stores
Built-in
connection
Ethernet port
SD1288 status of built-
connection
in Ethernet
status
port
*1 This applies to the Built-in Ethernet port QCPU.
*2 The built-in Ethernet port QCPU whose serial number (first five digits) is "11012" or later is targeted.
Explanation
This register stores the receive status of a socket communication
connection. Bits for connections other than that of socket
communication are always "0".
b15b14 to
SD1286
• TCP (standard receive mode)
•0: Data not received
•1: Data received
• TCP (fixed-length receive mode)
•0: Data not received or received data size is not the size of
receive buffer.
•1: Received data size reached to the receive buffer size.
• UDP
•0: Data not received
•1: Data received
This register stores a connection status of the built-in Ethernet
port.
b15 to b11 b10 b9 to
SD1288
1/0
Connection status
0 : Not connected to or disconnected
1 : Connected to a hub or device
Set by
(When Set)
b1 b0
Connection 1
Connection 2
to
Connection 15
Connection 16
(Status
change)
b0
from a hub or device
Corres-
Corres-
ponding
ponding
ACPU
CPU
D9
S
*2
QnU
New
LCPU
App-253
8
8
8
8
A
6
7
8