Code Converter : B4 - Fb240 - - Siemens S5-100U User Manual

Simatic s5 programmable controller

Hide thumbs Also See for S5-100U:

Table of Contents

Integrated Blocks and Their Functions

9.2.1 Code Converter : B4 - FB240 -

Use function block FB240 to convert a number in BCD (4 tetrads) with sign to a fixed-point binary

number (16 bits).

You must change a two-tetrad number to a four-tetrad number before you convert it.

If a tetrad is not in the BCD defined range, then FB240 displays the value "0". An error bit

message does not follow.

Table 9-2. Call and Parameter Assignments of FB240

Code Converter : 16

Use function block FB 241 to convert a fixed-point binary number (16 bits) to a number in BCD code

with additional consideration of the sign

word before conversion.

Table 9-3. Call and Parameter Assignments of FB241

Sign of the BCD

BCD number 4th and

BCD number tetrads

An eight-bit binary number must be transferred to a 16-bit

Binary number

-32768 to+32767

EWA 4NEB 812 6120-02

Table of Contents