Siemens Simatic S7-200 System Manual page 301

ASCII to HEX Example
I3.2
VB30 IN
Figure 10-56
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
LAD
ATH
EN
3 LEN OUT VB40
Application
VB30 33 45 41
VB40 3E AX
Note: The X indicates that the "nibble" (half of a byte) is unchanged.
Example of ASCII to HEX Instruction
STL
LD I3.2
ATH VB30, VB40, 3
ATH
Instruction Set
10-113