Siemens S7-200 - PC-based Visualization of Archive Data

Siemens S7-200 Driver
Data Types Description
Data
Type
Description
Boolean Single bit of a 16-bit value.*
Byte Unsigned 8-bit value.
bit 0 is the low bit
bit 7 is the high bit
Word Unsigned 16-bit value.
bit 0 is the low bit
bit 15 is the high bit
Short Signed 16-bit value.
bit 0 is the low bit
bit 14 is the high bit
bit 15 is the sign bit
DWord Unsigned 32-bit value.
bit 0 is the low bit
bit 31 is the high bit
Long Signed 32-bit value.
bit 0 is the low bit
bit 30 is the high bit
bit 31 is the sign bit
Float 32-bit floating point value.
The driver interprets two consecutive registers as a floating-point value by making the second
register the high word and the first register the low word.
String Null-terminated ASCII string
*For more information, refer to Address Descriptions.
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