7.2 IP Address and Connection Setting Instructions7-157.2.3 OPEN• Opens a specified connection.• CY (SR9) and SD29 are cleared to 0 when this instruction is executed.(Set when IP address is not established, connection is being processed, or connection isoccupied.)• Check if "X62: IP address established" is ON before executing the instruction. Instruction formatU216SOPENR0 X62 List of operandsOperand DescriptionS Specify the device address storing the connection number to be opened or a constant. Available devices (●: Available)Operand16-bit device 32-bitdevice IntegerRealnum-berString IndexmodifierWX WY WR WL WS SD DT LD UM WI WO TSCSTECE IX K U H SF DF " "S ● ● ● ● ● ● ● ● ● Processing• The communication circuit of the connection specified by S is opened.• When it is already open, it becomes no operation.• The completion of the open operation can be confirmed by the status (ON) of the clear tosend flag for the master communication or general-purpose communication.• The open type setting (automatic/manual) is not changed.• It can be executed when X62: IP address established is ON. If it is OFF when executing theinstruction, an error is set to CY flag and it becomes no operation.• During the processing of connection, an error is set to CY flag and it becomes no operation.• When the connection is occupied, it becomes no operation. Details of setting parametersSpecify the device address storing the connection number to be opened or a constant.Settingitem Settings SettingrangeS Connection No. Specify a connection number. 1 to 216
