s7-400 - PLC Programming & Automation

Scaling an Analogue Input in STL: The Integer Maths and Where It Overflows

Chart of the product of the raw count and the scale factor against the DINT limit of 2147483647, showing the ceiling at 77672 for a full-scale reading of 27648 and at 65538 for a raw word of 32767, beside the STL statement list in the order that keeps precision

Analogue scaling in STL on an S7-300, S7-400 or S7-1500: multiply before you divide, mind the DINT ceiling, and check OS rather than OV after the chain.

Siemens PLC Programming, S7-300 and S7-400 (SIMATIC S5) PLC

by PLC

Siemens S7-300 and S7-400 programming: the instruction set, how the bus systems connect, and which communication types each family supports on site.