● To open connections for a multi connection server, specify the first connection. If this
instruction is executed for a connection other than the first connection, an operation error
occurs.
■
Precautions for programming
● Insert the UNITSEL instruction immediately before this instruction and specify the unit (built-
in ET-LAN in the CPU unit) and the connection number.
● When the open type is set to open automatically, it is not necessary to execute this
instruction.
● This instruction is not available in interrupt programs.
■
Operand [S] setting
Specify the device address storing the connection number to be opened or a constant.
Setting item Settings
Setting
range
S
Connection
number
Specify a connection number.
1 to 216
■
Flag operations
Name Description
SR7
SR8
(ER)
Set when a value outside the range is specified for the parameter.
To be set when the slot number [S1] specified with UNITSEL is not 100 (built-in ET-LAN).
Set when executed in an interrupt program.
To be set when this instruction is executed for a connection other than the first connection in a
multi connection server.
CY
(SR9)
To be set when the instruction is executed while the IP address is not established. The detail code
set in SD29 is "12: IP address not established".
To be set when executed during the processing of connection. The detail code set in SD29 is "14:
Connection being processed".
(Note 1) For details of the error codes stored in the system data SD29, refer to "20.2 List of System Data
Registers".
17.7 OPEN (Connection Open)
17-40 WUME-FP7CPUPGR-12
To Next Page
Loading...
Need help?
General
