2.5.5 Machine Data For Machining Programs - Siemens SIMATIC S5 Manual

Machine Data and their Structure
Note
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The machine data does not influence the output of the actual value or the dis-
tance to go in the function block.
A double word (32 bits) is available for each piece of information, Each digit in a BCD-coded
number requires four bits, and the sign in STEP 5 format also requires four bits. The maximum
representable value in BCD format is therefore 9999999 pm.
Speeds use the byte and word parameter.
For a binary coded speed, the value between O and 65000 is only transferred in the word parame-
ter, the byte parameter is ignored.
With BCD coded speeds, the byte parameter informs the module whether the actual speed or a
tenth of the speed is located in the word parameter.
If a 1 is entered in the byte parameter, the IP247 multiplies the value in the word parameter by 10,
If actual values (actual position value, distance to go), transferred by the IP247 via the PC inter-
face to the CPU are to be output in BCD format, you must set this in FBI 64 (=Part 6 "Standard
Function Blocks FBI 64 and FBI 65").

2.5.5 Machine Data for Machining Programs

With a linear axis, the theoretical range of values for the tool length offset is from O to +/-
99.999999 m. For a rotary axis, the tool length offset is limited to values less than the traversing
range fixed by the range limits. The following points must also be taken into account:
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