Mitsubishi LJ61BT11 User Manual page 140

(1) Overview of link data transmission when the standby master
Master station(controlling)
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Master station(controlling)
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
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function is used
The following shows an overview of link data transmission when the standby
master function is used.
(a) When the master station controls the data link
1) Master station output
Standby master station (standby)
Station number 1
Occupies 1 station
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Data sent from the master station to the remote input RX and remote
register RWr in the standby master station (shown by the shaded areas
in the figure above) is used as output data when the master station
becomes faulty; and therefore it should be saved in another device using
the program.
When the master station becomes faulty, the saved data is transferred to
the remote output RY and remote register RWw in the standby master
station using the program.
2) Master station input
Standby master station (standby)
Station number 1
Occupies 1 station
Remote Remote
input RX output RY
RX00 to RX0F RY00 to RY0F
RX10 to RX1F RY10 to RY1F
RX20 to RX2F RY20 to RY2F
RX30 to RX3F RY30 to RY3F
RX40 to RX4F RY40 to RY4F
RX50 to RX5F RY50 to RY5F
Data sent to the remote output RY and remote register RWw in the
standby master station is used as input data by the standby master
station when local stations are operating; thus, it does not need to be
saved in another device.
Remote I/O station
Station number 2
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
Station number 2
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
8 FUNCTIONS
Remote I/O station
Station number 3
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
Station number 3
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
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