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MELSEC-Q
7 PROGRAMMING FOR EXECUTING THE MASTER FUNCTION
7.3.2 Program example not using the utility package
(1) When using auto configuration
(a) Device list
Device Description
Reference
section
M10
Parameter Setting Command for Master Function
―
M300
Auto Configuration Command
M301 Auto-Configuration
Flag
X01 I/O
Communicating
3.3.2 (8)
X14 Auto-Configuring
X15
Auto Configuration Completion
Y11
I/O Communication Request
Y15
Auto Configuration Request
Y17
Request for Saving Parameters to Flash ROM
D0
Auto Configuration Operation Setting
3.4.5
(b) Program example
Auto configuration operation setting
All configuration
Max. detection node No. = 4
Sets Auto Configuration Request
to on.
Auto configuring
Auto configuration completed
Sets Auto Configuration Request
to off.
Save parameters to flash ROM. (See (3).)
Writes parameters to buffer memory.
Sets Parameter Setting Command
for Master Function to on.
Change settings. (See (2).) *
1
Auto configuration
*1: Check that the settings such as node No., connection type, and I/O points are correct.
Correct values if any incorrect setting is identified. (For the setting details, refer to Section 7.3 (1).)
POINT
(1) Pre-determine the slave node settings (e.g. connection type) before executing
auto configuration.
(2) Check that the power of the slave nodes and the network is on and the wiring is
correct.
(3) Slave node settings detected by auto configuration are stored in order of node
No.
(4) When changing parameters for master function, set default values in the areas
after the parameter-set areas.
(Example) When changing the number of slave nodes that can perform I/O
communication from 6 to 4, set default values in the areas for 5th
and 6th slave nodes.
Summary of Contents for QJ71DN91
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