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3 DETAILS OF FUNCTION
3.1 C Controller Module Dedicated Functions
CCPU_FromBufHG
This function reads data from the fixed cycle communication area of the CPU module mounted on the specified module
position.
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Format
short CCPU_FromBufHG(unsigned short usIoNo, unsigned long short ulOffset, unsigned long ulSize,
unsigned short* pusDataBuf, unsigned long ulBufSize)
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Argument
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Description
• This function reads data for the size specified to the data size (ulSize) from the fixed cycle communication area of a CPU
module specified to the module position (usloNo), and stores it in the data storage destination (pusDataBuf). Data is read
by specifying an offset address from the start of the fixed cycle communication area.
• The fixed cycle communication area can be accessed only when the fixed cycle communication area setting under the
multiple CPU setting is configured.
Precautions
Note that the size of data storage destination (ulBufSize) should be equal to or bigger than the data size (ulSize).
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Return value
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Relevant functions
• Page 67 CCPU_FromBuf
• Page 108 CCPU_ToBuf
• Page 109 CCPU_ToBufHG
Argument
Name
Description
IN/OUT
usIoNo
Module position
Specify the module position.
Start I/O number divided by 16 (3E0H to 3E3H)
IN
ulOffset
Offset
Specify the offset in word units.
IN
ulSize
Data size
Specify the read data size in word units.
IN
pusDataBuf
Data storage destination
Specify the storage destination of read data.
OUT
ulBufSize
Data storage destination size
Specify the data storage destination size in word units.
IN
Return value
Description
0 (0000H)
Normal
Other than 0
Error
For details on the error, refer to the following chapter.
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