Opening the data base
DBOPEN(P)
RnPCPU
RnCPU RnENCPU
(Process)
These instructions connect to the database specified by (s) and make it available.
Ladder
(s)
FBD/LD
EN
ENO
s
d1
d2
d3
■Execution condition
Instruction
DBOPEN
DBOPENP
Setting data
■Descriptions, ranges, and data types
Operand
Description
(s)
Start device for storing the folder path of the database to be
opened.
Example: "2:\database1\recipe"
Within 128 characters
(d1)
Database identification number
(d2)
Completion device (start device that turns on one scan
upon completion of instruction)
• (d2)+0: Completion signal
• (d2)+1: Error completion signal
(d3)
Completion status
• 0000: Normal completion
• Other than 0000: Error completion (error code)
EN
Execution condition
ENO
Execution result
■Applicable devices
Operand
Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY
(s)
(d1)
(d2)
(d3)
7 APPLICATION INSTRUCTIONS
952
7.21 Database Access Instructions
RnPCPU
RnSFCPU RnSFCPU
(Redundant)
(Standard)
(Safety)
(d1)
(d2) (d3)
Execution condition
Word
J\
T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
ST
ENO:=DBOPEN(EN,s,d1,d2,d3);
ENO:=DBOPENP(EN,s,d1,d2,d3);
Range
1 to 4
Double word Indirect
U\G, J\,
Z
LT, LST,
U3E\(H)G
LC
Data type
Data type (label)
Unicode string
ANYSTRING_DOUBLE
16-bit signed binary
ANY16
Bit
ANYBIT_ARRAY
(Number of elements: 2)
Word
ANY16
Bit
BOOL
Bit
BOOL
Constant
specification
LZ
K, H E
Others
$