KEYENCE SR-700 Series - Manual (Page 16)

16 E SR SCRIPT RM
4-3 Deleting control characters when they are included in read data
( "3-5 Pattern matching" (Page 7)is used.)
4-4 Deleting <LF>(0x0A) when it is included in read data
4-5 Date comparison
This is used to control expiration dates, etc. The date data in the barcode is
compared with the reference date and output.
function readformatEvent()
local read_data
read_data=readResult():readData()
read_data=string.gsub(read_data,"%c","")
read_data=string.gsub(read_data,"%z","")
return (read_data)
end
-- Deletes control characters
-- Deletes NULL<0x00>
Execution result
Read data : <SOH><SOH>123
Execution result : 123
function readformatEvent()
local read_data
read_data=readResult():readData()
read_data=string.gsub(read_data,"\010","")
return (read_data)
end
-- Deletes [LF]<0x0A>(010 in
decimal number)
Execution result
Read data : ABC<LF>123
Execution result : ABC123
function readformatEvent()
local year=2012
local month=12
local date=22
local code_Year
local code_Month
local code_Date
local read_data = readResult():readData()
if string.len(read_data) < 8 then
return ("reading data is not correct")
end
code_Year = tonumber(left(read_data ,4))
code_Month = tonumber(mid(read_data,5,2))
code_Date = tonumber(mid(read_data,7,2))
if code_Year < year then
return "The year is not correct"
elseif code_Month < month then
return "The month is not correct"
elseif code_Date < date then
return "The date is not correct"
end
return
("OK")
end
-- Extracts date information and
converts it to numerical values.
-- Returns OK.
Execution result
Read data : 22001225. 20111222
Execution result : OK The year is not correct
5 Calculations
5-1 Obtaining angular degrees of a tilted 2D code
Angular degrees when a workpiece is read from the front are obtained.
* If it is read from angles other than the front, correct angular degrees cannot be
obtained.
* Set the "partition mark" for SR to ":" (colon).
function readformatEvent()
if result() == 2 then
return "READ_ERROR"
end
local
o_data
local data = readResult():cornerCoordinates()
local x1_y1 = field(data,1,":")
local x2_y2 = field(data,2,":")
local x1 = tonumber(field(x1_y1,1,"/"))
local x1 = tonumber(field(x1_y1,1,"/"))
local x2 = tonumber(field(x2_y2,1,"/"))
local y2 = tonumber(field(x2_y2,2,"/"))
if (x1 - x2) == 0 then
o_data = "90".."[deg]_"..readResult():readData()
return (o_data)
elseif (y1 - y2) == 0 then
o_data = "0".."[deg]_"..readResult():readData()
return (o_data)
else
o_data = (y1 - y2)/(x2 - x1)
o_data = math.atan(o_data)
o_data = math.deg(o_data)
o_data = math.floor(o_data)
o_data = o_data.."[deg]_"..readResult():readData()
return (o_data)
end
end
-- Displays the message at read
error.
-- Obtains the coordinates at 4 positions of code.
-- x1/y1:x2/y2:x3/y3:x4/y4
-- Obtains arctan.
-- Radian --> Converted to deg(°).
-- Truncates decimals.
-- Appends read data to output.
Execution result
Read Data :
Execution result : 45[deg]_keyence 0[deg]_keyence