Delta DVP-15MC Series, Руководство по эксплуатации

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Chapter 8 Logic Instructions
8-343
8_
FB/FC
Explanation Applicable model
FC
LRC instruction is used to find the LRC value of the specified data.
DVP15MC11T
DVP15MC11T-06
LRC
E N ENO
Data LR C
Length

Input Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
Data
The starting
address of the
data for LRC
value calculation
Input
The starting address of the data for
LRC value calculation. The starting
address can be got by ADR instruction
——
Length
Length of the data
for LRC value
calculation
Input
How many bytes of data are for the
LRC value calculation by counting from
the starting address of the data with
the unit: byte.
1~255
LRC The LRC value Output The LRC value of the specified data
Depends on the data
type of the variable
that the output
parameter is
connected to.
B
oo
le
an
Bit string Integer
Real
number
Time, date
PO
IN
T
ER
B
OOL
BYT
E
WO
R
D
DW
O
RD
LW
O
R
D
US
INT
UI
NT
UDI
NT
UL
INT
SI
N
T
IN
T DI
NT
LI
N
T
R
EA
L
L
R
E
AL
T
IME
D
AT
E
T
O
D
DT
PO
IN
T
ER
T
O
BYT
E
Data
●
Length
●
LRC
●
Note:
The symbol
●
indicates that the parameter is allowed to connect to the variable or constant of the data type.

Function Explanation
LRC instruction is used to find the LRC value of the specified data.
The instruction performs the calculation of the LRC value according to the starting address specified by
Data and number of bytes specified by Length.
The calculation result is put in the output parameter LRC .