Addressing Range Of The Target System - Siemens SINUMERIK 828D Function Manual

P4: PLC for SINUMERIK 828D
14.3 Programming
14.3.2.2

Addressing range of the target system

Address range of a memory type is the addressing range for this type of memory that spans the lowest and
highest possible address numbers. The lowest and highest possible address number depends on the particular
memory type.
If you execute operations, which communicate with the target system, then the Programming Tool PLC828
recognizes your CPU version. When generating your program, you must ensure that you only use the address
range valid for this CPU. If you attempt to load a program that accesses addresses ranges, which are not valid for
this CPU, then an error message is output.
Address ranges
Access method
Bit (byte.bit)
Byte
Word
Double word
1100
Type of memory Min. and max. address numbers
I
0.0 - 255.7
256.0 - 256.3
Q
0.0 - 255.7
256.0 - 256.3
M 0.0 - 999.7
SM 0.0 - 0.6
T 0 - 15 (100 ms)
16 – 127 (10 ms)
C 0 – 63
L 0.0 - 59.7
IB
0 - 255
QB
0 - 255
MB 0 – 999
SMB 0
LB 0 - 59
AC 0 - 3
IW
0 - 254
QW
0 - 254
MW 0 – 998
T 0 - 15 (100 ms)
16 - 127 (10 ms)
C 0 – 63
LW 0 – 58
AC 0 – 3
ID
0 - 252
QD
0 - 252
MD 0 996
LD 0 - 56
AC 0 - 3
1)
2)
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2)
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions