Mitsubishi Electric MELSEC iQ-R C Series Programming Manual page 97

CCPU_FromBufHG
This function reads data from the fixed cycle communication area of the CPU module mounted on the specified module
position.
Format
short CCPU_FromBufHG(unsigned short usIoNo, unsigned long short ulOffset, unsigned long ulSize,
unsigned short* pusDataBuf, unsigned long ulBufSize)
Argument
Argument Name
usIoNo Module position
ulOffset Offset
ulSize Data size
pusDataBuf Data storage destination
ulBufSize Data storage destination size
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 (usIoNo), 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 to the offset (ulOffset).
• 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).
Return value
Return value Description
0 (0000H) Normal
Other than 0 Error
For details on the error, refer to the following:
Page 225 ERROR CODE LIST
Relevant functions
• Page 94 CCPU_FromBuf
• Page 142 CCPU_ToBuf
• Page 143 CCPU_ToBufHG
Description
Specify the module position.
Start I/O number divided by 16 (3E0H to 3E3H)
Specify the offset in word units.
Specify the read data size in word units.
Specify the storage destination of read data.
Specify the data storage destination size in word units.
3 DETAILS OF FUNCTION
3.1 C Controller Module Dedicated Functions
3
IN/OUT
IN
IN
IN
OUT
IN
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