Data Communications By Melsec Data Link Functions - Mitsubishi MELSEC-Q Series User Manual

14
COMMUNICATIONS BETWEEN CPU MODULES

14.1 Data Communications by MELSEC Data Link Functions

(1) Data communications by MELSEC data link functions (the Q06CCPU-V
14
- 2 14.1 Data Communications by MELSEC Data Link Functions
only)
Access can be made from the C Controller module to programmable controller CPU
device data.
Use the MELSEC data link functions to create the user program of the C Controller
module.
For the Q06CCPU-V-B, the MELSEC data link functions are not applicable.
To access programmable controller CPU device data from the Q06CCPU-V-B, use
the CPU shared memory.
Programmable
controller CPU
1)
Device data
2)
Figure 14.1 Data communications by MELSEC data link functions
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);
1) Reads the device data of the programmable
controller CPU to the C Controller module.
2) Writes data from the C Controller module to the
programmable controller CPU device.