Mitsubishi Electric MELSEC iQ-R Series - Starting a Transaction

980
7 APPLICATION INSTRUCTIONS
7.21 Database Access Instructions
Starting a transaction
DBTRANS(P)
These instructions declare the start of a transaction in relation to the database corresponding to the specified identification
number.
■Execution condition
Setting data
■Description, range, data type
■Applicable devices
Ladder ST
ENO:=DBTRANS(EN,s,d1,d2);
ENO:=DBTRANSP(EN,s,d1,d2);
FBD/LD
Instruction Execution condition
DBTRANS
DBTRANSP
Operand Description Range Data type Data type (label)
(s) Database identification number 1 to 4 16-bit signed binary ANY16
(d1) Completion device (start device that turns on one scan
upon completion of instruction)
• (d1)+0: Completion signal
• (d1)+1: Error completion signal
 Bit ANYBIT_ARRAY
(Number of elements: 2)
(d2) Completion status
• 0000: Normal completion
• Other than 0000: Error completion (error code)
 Word ANY16
EN Execution condition  Bit BOOL
ENO Execution result  Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(s)         
(d1)         
(d2)         
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
(s) (d1) (d2)
EN ENO
d1
d2
s