Mitsubishi Electric MELSEC iQ-R C Series Programming Manual page 122

CCPU_ReadDevice
This function reads data from internal user devices and internal system devices of C Controller module.
Format
short CCPU_ReadDevice (short sDevType, unsigned long ulDevNo, unsigned long ulSize, unsigned short* pusDataBuf,
unsigned long ulBufSize)
Argument
Argument Name
sDevType Device type
ulDevNo Start device number
ulSize Data size
pusDataBuf Data storage destination
ulBufSize Data storage destination size
Description
This function reads data of a device after the one specified to the device type (sDevType) and the start device number
(ulDevNo) for the size specified to the data size (ulSize), and stores it in the data storage destination (pusDataBuf).
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
0 (0000H)
Other than 0
Relevant function
• Page 152 CCPU_WriteDevice
3 DETAILS OF FUNCTION
120
3.1 C Controller Module Dedicated Functions
Description
Specify the device type.
Page 13 Argument specification
Specify the start device number.
(Only multiples of 16 can be specified for bit devices.)
Specify the read data size in word units.
Specify the storage destination of read data.
Specify the data storage destination size in word units.
Description
Normal
Error
For details on the error, refer to the following:
Page 225 ERROR CODE LIST
IN/OUT
IN
IN
IN
OUT
IN