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4 FUNCTIONS
(3) Operation flow
4 - 2
This section explains how I/O communication is performed with each slave node.
(a)
When starting I/O communication by I/O Communication Request (Y11)
Module Ready (X0F)
Auto Configuration
Request (Y15)
OFF
Request for Saving
Parameters to Flash
OFF
ROM (Y17)
I/O Communication
Request (Y11)
I/O Communicating
(X01)
Error Set Signal for
Master Function (X03)
Error Information for
Master Function
(01B1
)
H
Parameters for Master
1)
Function
MOV/TO
(01D4
to 03CF
)
H
H
instruction
Master Function Receive
Data (0700
to 07FF
)
H
H
Master Function Transmit
Data (0900
to 09FF
)
H
H
1)
Set parameters in Parameters for Master Function (address: 01D4
03CF
).
H
2)
Set initial values of ON/OF information for each slave node in Master
Function Transmit Data (address: 0900
3)
Set Auto Configuration Request (Y15) and Request for Saving
Parameters to Flash ROM (Y17) to OFF.
4)
When I/O Communication Request (Y11) is set to ON, the parameters
are checked.
5)
When the parameter check is succeeded, I/O communication with
each slave node is started and I/O Communicating (X01) is set to ON.
• The status of input from each slave node is stored in Master
Function Receive Data (address: 0700
• The ON/OFF information to be sent to each slave node is set in
Master Function Transmit Data (address: 0900
6)
If the parameter check has failed, the ERR. LED lights up and Error
Set Signal for Master Function (X03) is set to ON. At this time, I/O
Communicating (X01) is not set to ON.
Check the error code in Error Information for Master Function
(address: 01B1
7)
Setting I/O Communication Request (Y11) to OFF stops I/O
communication with each slave node, causing I/O Communicating
(X01) to turn OFF.
3)
3)
4)
Parameter
check
2)
MOV/TO
instruction
), and take corrective actions.
H
MELSEC-Q
7)
5)
6)
MOV/FROM
instruction
MOV/FROM
instruction
MOV/TO
instruction
to 09FF
).
H
H
to 07FF
).
H
H
to 09FF
).
H
H
4 - 2
4
to
H
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Table of Contents
Troubleshooting
