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FX Series Programmable Controllers Related Information 9
9-22
9 ) Siemens
a) S7-300 Series PLC
No. expression
Table 9.29:
Device name Allowable setting monitor range
Device No.
expression
Bit device
Input (I) I0.0 to I511.7
Decimal
Output (Q) Q0.0 to Q511.7
Bit memory (M) M0.0 to M2047.7
Word device
Timer (current value) (T) T000 to T511
Counter (current value) (C) C000 to C511
Data register (DB)
DB1.DBW0 to DB1.DBW65534
DB2.DBW0 to DB2.DBW65534
:
DB1022.DBW0 to DB1022.DBW65534
DB1023.DBW0 to DB1023.DBW65534
Device No.
I,Q,M
Bit device
Byte address
0 to 511,2047
Word device
.
Bit address
0 to 7
Device No.
T,C
Device No.
000 to 511
Device No.
DB
Block No.
1 to 1023
.
Device No.
DBW0 to DBW65534