KEYENCE SR-700 Series - Manual (Page 12)

12 E SR SCRIPT RM
Array operation
Others
Function name Argument Return value Applicable model
table.concat(tbl,se
p,i,j)
tbl: array name
sep: character
(1 character)
i: numerical
value
j: numerical
value
Character strings combined
after the data from tbl[i] to l[j] in
the array (tbl) is delimited by
sep.
table.insert(tbl,i,v
)
tbl: array name
i: numerical
value
v: numerical
value
Inserts v into the tbl[i] position
in the array (tbl).
Elements following the ith
position are moved backward
by one.
No return value.
table.maxn(tbl) tbl: array name
Returns the largest index value
in the array (tbl).
table.remove(tbl.i
)
tbl: array name
i: numerical
value
Deletes the element at the tbl[i]
position in the array (tbl).
Elements following the ith
position are moved forward by
one.
No return value.
table.sort(tbl) tbl: array name
Sorts the elements in the array
(tbl).
No return value.
Function name Argument Return value Applicable model
assert( v,mes)
v: judgment
mes: character string If v is False, mes is output.
The program is force-quit.
error("",1) -
Errors (ScriptError) out
explicitly and terminates the
program.
print(mes) mes: character string Outputs messages for debug.
tonumber(v) v: value
Converts to numerical values.
Returns nil if value conversion
is not possible.
tostring(v) v: value Converts to character strings.
type(v) v: value Variable type
5-5
User-defined function
This section describes functions that can be uniquely defined by users.
User-defined function
Format
z Definition of function
z Calling the function
function function name (argument)
Variable declaration
Process
return( variable ) The value entered into return is the return value.
end
Function name (value)
Example 1
function readformatEvent()
local a Declares variable a.
a= test_1() Stores the result of test_1() in variable a.
a = a .. "ABC" Appends character string "ABC" to variable a.
return (a) Outputs the result.
end
function test_1() Defines the user-defined function test_1().
local c Declares variable c.
c = 123 Assigns "123" to variable c.
return (c) The value of variable c is the return value.
end
Execution result 123ABC