SMC Networks JXCEH, Руководство по эксплуатации

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-82-
No. JXC
※
-OMY0008
20. Handling of sent/received data
There are three types of data, 1byte data, 2bytes data and 4bytes data.
Specifically, handling of 4bytes negative data is explained below.
●
Negative value data
“Please note following example for negative value data.
In the example, 4bytes negative value data is explained.
E.g.) Output data "position": When inputting -700.00mm (negative value) to Index 7022h.
“Position” is based on the unit by 0.01mm.
Negative values are expressed using two’s complement notation
The value to express -700.00mm is -70000 in decimal number, and FFFEEE90h in
hexadecimal.
Sending of
FFFEEE90 h
data is as shown below.
Index 7022h
Bit31 Bit0
Position (DINT)
FFFEEE90h