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MELSEC-Q
6 PRE-OPERATIONAL PROCEDURES AND SETTING
6.6.1 Communication starting conditions depending on basic parameter/MODBUS
R
device
assignment parameter starting method setting
The communication starting conditions change depending on the combination of the
basic parameter and MODBUS
R
device assignment parameter starting methods in
Switch 2 of the intelligent function module switch setting.
(1) When GX Configurator-MB is used for parameter setting
When GX Configurator-MB is used to make parameter setting, set the basic
parameter and MODBUS
R
device assignment parameter starting methods to
ON.
[Intelligent function module switch setting]
b0
b1
Basic parameter starting method
1: Start with the user-set parameters.
1: Start with the user-set parameters.
<Switch 2>
1
1
R
MODBUS device assignment parameter
starting method
[Communication starting conditions]
Not startable
Not executable
Request message not acceptable
GX Developer not connectable
Startable
Executable
Request message acceptable
GX Developer connectable
Module READY
QJ71MT91 operation
Y1
X1
X3
Y8
X8
XA
X0
Slave function
R
R
R
Parameter setting
processing by GX
Configurator-MB
Default parameter
setting not made
Power
OFF,
then
ON/
Pro-
gram-
mable
control-
ler
CPU
reset
Parameter setting operation
Function executability
Basic parameter
setting request
Basic parameter
setting, normally
completed
MODBUS device
assignment parameter
setting request
MODBUS device
assignment parameter
setting, normally
completed
MODBUS device
assignment parameter
setting existence
Automatic communication
function (Master function)
Dedicated instruction
(Master function)
GX Developer connection
Basic parameter
existence