5
FUNCTIONS
5.2 Master Function
5.2.1 Automatic communication function
5 - 12
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
MODBUS(R) STANDARD
FUNCTIONS
5
FUNCTION
6
PRE-OPERATIONAL
PROCEDURES AND
SETTINGS
7
PARAMETER SETTING
8
UTILITY PACKAGE
(GX Configurator-MB)
(5) Start and stop of the automatic communication function
(a) When the automatic communication parameters are set on GX Configurator-MB
When the automatic communication parameters are set on GX Configurator-MB,
no sequence program for start is required.
1) Operation timing of the automatic communication function
The automatic communication function is activated by powering ON the
programmable controller from OFF or by resetting the programmable
controller CPU (with the programmable controller CPU's RUN/STOP switch
set to RUN).
The automatic communication will not start if the programmable controller is
powered ON from OFF or if the programmable controller CPU is reset (with
the programmable controller CPU's RUN/STOP switch set to STOP).
If the QJ71MB91 is mounted on a MELSECNET/H remote I/O station, the
automatic communication function is activated when the remote I/O station
receives the information notifying the status change (from STOP to RUN) of
the remote master station's programmable controller CPU.
2) How to check the activation of the automatic communication function
When the QJ71MB91 starts communication with the slave device with the
automatic communication function, the SD and RD LEDs turn ON. (Only when
communicating)
3) Automatic communication start/stop test
On the "Automatic communication status" screen of GX Configurator-MB, the
start/stop test of the automatic communication function can be performed.
( Section 8.6.3)
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