Mitsubishi Electric MELSEC Q Series User Manual page 133

(3) Output to output modules and intelligent function modules
It is not possible to output ON/OFF data to non-controlled modules.
Devices will be turned ON or OFF inside the QCPU when the output from output modules or intelligent function
modules controlled by other CPUs is turned ON/OFF by a sequence program, but this will not be actually output
to the output modules or intelligent function modules.
(4) Accessing the intelligent function module buffer memory
(a) Reading from buffer memory
It is possible to read data from the buffer memory of intelligent function modules being controlled by other
CPUs with the instructions listed below.
• FROM instruction
• Instructions that use inteligent function module device (U \G )
3 - 28
X0
X0
ON/OFF allowed
CPU 0 1
Input Output Input Output
Number of slot points 16 points 16 points 16 points 16 points
2
Figure 3.26 When performing output from CPU No.1 to module
CPU 0 1 2 3
1 1 2 1 1 1 1 1 1
Buffer memory can be read.
Figure 3.27 Reading from intelligent function module
Y30
Y10
ON/OFF not allowed
Slot number
2 3 4
2 2
Control CPU setting
Intelligent function module
Slot number
4 5 6 7
1 1 2 2 2 Control CPU setting