8/2/2019 Data Block Processing With the S7-22x
Www.otomasyonegitimi.com
1/2
show the entry listData block processing with the S7-22x
QUESTION:Which data blocks does the S7-22x system recognize?
ANSWER:The S7 22x only knows the "DB1" data block. But the "DB1"
data block is not located in a program
part as with STEP 5 and STEP 7, but it occupies the start area
of the variables memory "V". Thesize of the variable memory that
can be used for the DB1 depends on the CPU:
If you want to create a data block in your program, then enter
the addresses of the data and thevalues in the data block editor.
The data block editor is a text editor with a free choice of
format, i.e.there are no specific fields designated for specific
information. Nevertheless there are a number of
rules that you must observe to ensure that the data can be
compiled correctly.
Guidelines
1. In the first column of each line enter the size of the data
and the start address of the value.Micro/WIN defines the address
based on the first entry of a line.
2. To separate the addresses, data values and comments, which
start with a double-slash (//),use spaces or the TAB key.
3. End each line with a carriage return.4. Always specify a
Memory Area and an Address. Examples: VB12 or VW100 etc.
Sample data block:
Keywords:Memory types, Memory area, System properties
CPU 221 CPU 222 CPU 224 CPU 226 CPU 226XM
NumberArea NumberArea NumberArea NumberArea NumberArea
2KB VB0toVB2047
2KB VB0toVB2047
5KB VB0toVB5119
5 KB VB0toVB5119
10KB VB 0toVB10239
VB0 255 //Byte value, start at VB0VW2 256 //Word value, start at
VW2
VD4 700.59 //Double-word real number, start at VD4
VB8 -35 //Byte value, start at VB8
VW10 16#0A //Word value, HEX, start at VW10
VD14 146879 //Double-word value, start at VW20
VW20 2 4 8 16 32 64 //Table with word values, start at
VW20.//The values go over several lines.
-2 -4 -8 -16 -32 -64 //The first column is reserved for
addresses//in the memory.
VB45 'Up' //ASCII character string with two bytes, start at
VB45
VW90 65535 //Word value, start at VW90
Entry ID:8804145 Date:2001-10-15
I regard this article.... as helpful as not helpful
Copy link Suggestion for the entry Send to a friend
Print
Page 1 of 2Siemens - Industry Automation and Drive Technologies
- Service& Support - Automation...
10.09.2010http://support.automation.siemens.com/WW/llisapi.dll/8804145?func=ll&objId=8804145
...
http://support.automation.siemens.com/WW/llisapi.dll/8804145?func=ll&objId=8804145http://support.automation.siemens.com/WW/llisapi.dll/8804145?func=ll&objId=8804145
