ABB 机器人 压包指令PackRawBytes 解包指令UnpackRawBytes

ABB 压包指令PackRawBytes 解包指令UnpackRawBytes

PackRawBytes- 将数据导入 rawbytes 数据。

使用方法

PackRawBytes
用于将 num, dnum, byte,或者 string类型的数据，打包到 rawbytes 类型的变量中.

基本举例 ：

VAR rawbytes raw_data;

VAR num integer := 8;

VAR dnum bigInt := 4294967295;

VAR num float := 13.4;

VAR byte data1 := 122;

VAR byte byte1;

VAR string string1:="abcdefg";

PackDNHeader "10", "20 1D 24 01 30 64", raw_data;

将 DeviceNet 头文件 打包到 raw_data.

然后通过 PackRawBytes 打包要求的现场总线数据到 raw_data 中 。下面的例子展示了不同的数据如何被添加。

Example 1

PackRawBytes integer, raw_data, (RawBytesLen(raw_data)+1) \IntX :=DINT;

在 raw_data 中，头文件之后的下四个字节将是 8.

Example 2

PackRawBytes bigInt, raw_data, (RawBytesLen(raw_data)+1) \IntX :=

UDINT;

The contents of the next 4 bytes after the header in raw_data will be 4294967295

decimal.

Example 3

PackRawBytes bigInt, raw_data, (RawBytesLen(raw_data)+1) \IntX :=

LINT;

The contents of the next 8 bytes after the header in raw_data will be 4294967295

decimal.

Example 4

PackRawBytes float, raw_data, RawBytesLen(raw_data)+1) \Float4;

The contents of the next 4 bytes in raw_data will be 13.4 decimal.

Example 5

PackRawBytes data1, raw_data, (RawBytesLen(raw_data)+1) \ASCII;

The contents of the next byte in raw_data will be 122, the ASCII code for "z".

Example 6

PackRawBytes string1, raw_data, (RawBytesLen(raw_data)+1) \ASCII;

The contents of next 7 bytes in raw_data will be "abcdefg", coded in ASCII.

Example 7

byte1 := StrToByte("1F" \Hex);