Open (Connection Open) - Panasonic FP7 Series Command Reference Manual

17.7 OPEN (Connection Open)

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Ladder diagram
(Note 1) The above figure shows the case that S1=U100 (built-in ET-LAN in the CPU unit) and S2=U1
(connection number 1) are specified by the UNITSEL instruction.
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List of operands
Operand Description
S Device address storing the connection number to be opened or a constant.
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Devices that can be specified (indicated by ●)
Operan
d
W W
X Y
S ● ●
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Outline of operation
● This instruction opens a specified connection.
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Processing
● The communication circuit of the connection specified by [S] is opened.
● When the connection is already open, this instruction is not executed.
● The completion of the open operation can be confirmed by the status (ON) of the clear to
send flag for the master communication or general-purpose communication.
● The open method setting (automatic/manual) is not changed.
● This instruction can be executed when the IP address establishment flag (X62) is ON. As an
execution condition of the instruction, insert a program that checks the status of the flag
(X62). If this instruction is executed when the flag (X62) is OFF, 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.
● During the processing of connection, the system relay SR9 (carry flag CY) is set and this
instruction is not executed.
● When the connection is occupied, this instruction is not executed.
WUME-FP7CPUPGR-12
16-Bit device:
W W W S D L
R L S D T D
● ● ● ●
17.7 OPEN (Connection Open)
32-Bit
device:
TS TE
U W
WI IX
C C
M O
S E
Real St
Integer numbe rin
r g
D
K H SF " "
Ｕ
F
● ●
Index
modifie
r
●
17-39