Mitsubishi Electric Q12DCCPU-V - Data Communications by MELSEC Data Link Functions

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13.1 Data Communications by MELSEC Data Link Functions
13
COMMUNICATIONS BETWEEN CPU MODULES
13.1 Data Communications by MELSEC Data Link Functions
(1) Data communications by MELSEC data link functions
From the C Controller module, access can be made to device data in a programmable
controller CPU or C Controller module.
Use MELSEC data link functions when creating a user program of the C Controller
module.
For the Q06CCPU-V-B, MELSEC data link functions are not applicable.
To access device data of a programmable controller CPU from the Q06CCPU-V-B,
use the CPU shared memory.
( Page 13-12, Section 13.3)
Remark
For the MELSEC data link functions, refer to the following.
C Controller Module User's Manual (Utility Operation, Programming)
Figure 13.1 Data communications by MELSEC data link functions
Q12DCCPU-V
Q06CCPU-V
Q06CCPU-V-B
Programmable
controller CPU
Device data
C Controller module
/*Reads the device data of the programmable controller CPU */
ret = mdReceive(path, stno, devtyp, devno, size, data);
/*Writes data to the programmable controller CPU device */
ret = mdSend(path, stno, devtyp, devno, size, data);
2)
1) Reads the device data of the programmable
controller CPU to the C Controller module.
1)
2) Writes data from the C Controller module to the
programmable controller CPU device.