Rockwell Automation 2080-LC20-20QBBR Micro820 20-point Programmable Controllers User Manual - Manual (Page 91)

Rockwell Automation Publication 2080-UM005A-EN-E - December 2013 83
Using microSD Cards Chapter 9
Recipe Micro820 controllers support the Recipe feature and allows users to store and
load a list of data to and/or from recipe data files using the RCP instruction. It
also allows users to download, upload, and delete Recipe data on the microSD
card through Connected Components Workbench.
A maximum number of 10 recipe sets is supported for a Micro820 program. Each
recipe can contain up to 128 variables, with a maximum of four (4) data string
variables per recipe. String variables can have a maximum of 252 characters.
Variations of the recipe are stored in separate files with unique file names. For
more information on how recipes are stored on the microSD card, see the
Recipe
Directory Structure on page 84 .
REAL 32-bit floating point value -3.40282347E+38, +3.40282347E+38
LREAL 64-bit floating point value -1.7976931348623157E+308,
+1.7976931348623157E+308
STRING (2) character string
(1 byte per character)
'"Rotation Speed"
DATE (1) Unsigned 32-bit
integer value
1234567
(Date variables are stored as 32-bit words, a
positive number of seconds beginning at
1970-01-01 at midnight GMT.)
TIME (1) Unsigned 32-bit
integer value
1234567
(Time variables are stored as 32-bit words, positive
number of milliseconds.)
(1) BOOL, DATE, TIME data variables are presented in decimal digital format in the microSD Card. Users have the
option to convert this format to a more friendly format. For example, use ANY_TO_STRING function block to
convert BOOL data type (0, 1) to FALSE or TRUE. You can similarly do the same for DATE and TIME data types.
DATE data type is presented in differential decimal digital value between system baseline time (1970/01/
01,00:00:00) and current date value. Unit is millisecond.
Time should be absolute time value. Unit is second.
(2) String data variables are enclosed in double quotation marks in the datalog file.
The example below shows DSET1 using string variables and DSET2 using integers.
Supported Data Types for Datalog and Recipe Function Blocks
Data Type Description Example format in output
datalog file
Recipe Specifications
Attribute Value
Maximum number of recipe sets 10 Recipe sets are stored in 10 directories
(Rcp_Id01...Rcp_Id10) with a maximum number
of 50 recipe files in each directory. Maximum number of recipes
in each set
50
Maximum number of variables
per recipe
128 Configured in Connected Components
Workbench software.
Maximum bytes per recipe file 4 KB