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MELSEC-Q
4 FUNCTIONS
4.2 Operation Mode
QJ71PB92D has four operation modes: Normal service mode (MODE 0), Extended
service mode (MODE E), Parameter setting mode (MODE 1), and Self-diagnosis mode
(MODE 2).
The operating modes are set using the GX Configurator-DP.
Each of these modes is explained as follows.
Operation mode
Description
Reference
Normal service
mode
(MODE 0)
Mode in which a communication is made with the slave station.
The I/O areas for each slave station are allocated to a fixed 32 bytes.
Section 4.2.1
Extended service
mode
(MODE E)
Mode in which a communication is made with the slave station.
The I/O areas for each slave station are allocated to the areas of any
size (The I/O area size for each slave station is set using GX
Configurator-DP).
Section 4.2.2
Parameter setting
mode
(MODE 1)
Mode in which parameters are set in QJ71PB92D.
Normally, GX Configurator-DP switches the operation mode
automatically to this mode when setting parameters, and after setting
the parameters, switches to the mode set in the flash ROM.
When the mode is set to the Parameter setting mode using the
operation mode change signal (Y11), the mode is changed to the other
operation mode using the GX Configurator-DP.
A communication with the slave station is not performed.
Self-diagnosis
mode
(MODE 2)
Mode in which the test for diagnosing the QJ71PB92D module for
hardware error.
A communication with the slave station is not performed.
Section 5.4
