Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 752

■Control data
Device Item
(s2)+0 System area
(s2)+1 Completion status
(d)+0 Target device IP address
(d)+1
(d)+2 Target device port
number
(d)+3 Host station port number
(d)+4 Application setting area
*1 System: The CPU module stores the execution result of the instruction.
*2 When the instruction is executed for a connection that is not open, 0H is returned.
*3 Of the host station port numbers, 1 to 1023 (0001H to 03FFH) are generally reserved port numbers and 61440 to 65534 (F000H to
FFFEH) are used by other communication functions. Thus, using 1024 to 5548 and 5570 to 61439 (0400H to 15ACH and 15C2H to
EFFFH) as the port numbers is recommended. Do not specify 5549 to 5569 (15ADH to 15C1H) since they are used by the system.
Processing details
This instruction reads the connection information of the connection specified by (s1).
For details, refer to MELSEC iQ-F FX5 User's Manual (Ethernet Communication).
Operation error
Error code Description
(SD0/SD8067)
3405H The connection number specified by (s1) is other than 1 to 8.
2820H The device number specified by (s2) or (d) is outside the range of the number of device points.
2822H Device that cannot be specified is specified.
10 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
750
10.2 Socket Communications Function Instructions
Description

The status at the completion of the instruction is stored.
0000H: Completed successfully
Other than 0000H: Completed with an error (error code)
For error codes, refer to MELSEC iQ-F FX5 User's Manual
(Ethernet Communication).
The IP address of the target device is stored.
The port number of the target device is stored.
The host station port number is stored.
b15b14 b13 to b10 b9 b8 b7
(d)+4 [3] 0 [2] [1]
[1] Communication method (protocol)
0: TCP/IP
1: UDP/IP
[2] Procedure of the socket communication function
1: Non-protocol method
[3] Open method
00: Active open or UDP/IP
10: Unpassive open
11: Fullpassive open
Setting range


1 to 3758096382
(00000001H to
DFFFFFFEH)
1 to 65534 (0001H to
FFFEH)
1 to 5548, 5570 to 65534
(0001H to 15ACH, 15C2H to
FFFEH)
As shown on the left
to b0
0
*1
Set by

System
System
*2
*2
*2*3
*2