Technical data

Testing with the Variable Table
20.4 Entering Variables in Variable Table
Programming with STEP 7
452 Manual, 05/2010, A5E02789666-01
20.4.7 Examples
20.4.7.1 Example of Entering Addresses in Variable Tables
Permitted Address: Data Type: Example (English Mnemonics):
Input | Output | Bit memory BOOL I 1.0 | Q 1.7 | M 10.1
Input | Output | Bit memory BYTE IB 1 | QB 10 | MB 100
Input | Output | Bit memory WORD IW 1 | QW 10 | MW 100
Input | Output | Bit memory DWORD ID 1 | QD 10 | MD 100
I/O (Input | Output) BYTE PIB 0 | PQB 1
I/O (Input | Output) WORD PIW 0 | PQW 1
I/O (Input | Output) DWORD PID 0 | PQD 1
Timers TIMER T 1
Counters COUNTER C 1
Data block BOOL DB1.DBX 1.0
Data block BYTE DB1.DBB 1
Data block WORD DB1.DBW 1
Data block DWORD DB1.DBD 1
Note
The entry "DB0. .." is not permitted because it is already used internally.
In the Force Values Window
• When forcing with S7-300 modules, only inputs, outputs, and I/O (outputs) are allowed.
• When forcing with S7-400 modules, only inputs, outputs, bit memory, and I/O (inputs/outputs)
are allowed.