Specifications

App - 58
Appendix 5.2 OPEN Instruction
This instruction establishes a connection (open processing) with an external device to
perform the data communication.
Applicable device
Internal device
(System, user)
MELSECNET/H,
MELSECNET/10
Direct J
\
Constant
Setting
data
Bit Word
File
register
Bit Word
Special module
U
\G
Index
register
Zn
K,H $
Others
(S1)
(S2)
(D1)
"Un"ZP.OPEN
ZP.OPEN
(D1)(S1) (S2)
[Instruction code]
[Executing condition]
Command
Setting data
Setting data Description Set by (*1) Data type
"Un"
Start input/output signal of the Ethernet module
(00 to FE: two higher digits of the 3-digit input/output signal)
Binary 16 bits
(S1) Connection number (1 to 16)
User
Binary 16 bits
(S2) Head number of the device that stores control data User, system Binary 16 bits
(D1)
Head number of the host station bit device that turns on for one scan upon
completion of instruction.
(D1) + 1 also turns on if the instruction execution ends abnormally.
System Bit
The file registers for each of the local device and the program cannot be used as devices to be
used in the setting data.