the transfer status, refer to the "17.3 ETSTAT (Acquiring Ethernet Unit Information: FTP/
HTTP/SMTP)" instruction.
■
Processing
● The instruction controls whether to enable, disable, or cancel transfer for the target [S1]
according to the specification of the control content [S2].
● This instruction can be executed when the Ethernet initialization active flag (X61) is OFF. As
an execution condition of the instruction, insert a program that checks the status of the flag
(X61). If this instruction is executed when the flag (X61) is ON, the system relay SR9 (carry
flag CY) is set and the instruction is terminated without being executed.
● When the instruction is completed successfully, the system relay SR9 (carry flag CY) and the
system data register SD29 (Ethernet communication error code) are cleared.
■
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.
● For [S1] and [S2], specify the starting address of the device area that stores the string data
that indicates the set parameters, or a character constant. When specifying a device area for
an operand, set string data using the SSET instruction in advance. However, the ESSET
instruction cannot be used because the format is different.
● Both upper and lower case characters can be used. "Abcd", "ABCD" and "abcd" are all
synonymous.
● This instruction is not available in interrupt programs.
17.15 FTPcCTL (FTP Client Transfer Control)
17-78 WUME-FP7CPUPGR-12
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