Mitsubishi Electric MELSEC iQ-R Series User Manual page 48

■Operation between the standby master station going down and the master station controlling
data link
If the standby master station goes down, the master station takes over the control of data link.
(Output from the master station)
Master station (controlling)
(station No.: 1→0)
Remote Remote
output (RY)
input (RX)
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
Outputs (RY and RWw) of the standby master station are stored in inputs (RX and RWr) of the master station. By transferring
the inputs (RX and RWr) of the master station to the outputs (RY and RWw), outputs to the slave stations are continued.
(Shaded areas in the figure above) ( Page 86 Communication Example Using the Standby Master Function)
(Input of the master station)
Master station (controlling)
(station No.: 1→0)
Remote
Remote
output (RY)
input (RX)
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
Inputs (RX and RWr) of the standby master station are stored in the outputs (RY and RWw) of the master station. By
transferring the outputs (RY and RWw) of the master station to the inputs (RX and RWr), inputs from the slave stations are
continued. (Shaded areas in the figure above) ( Page 86 Communication Example Using the Standby Master Function)
1 FUNCTIONS
46
1.3 Standby Master Function
Standby master station
Remote Remote
output (RY)
input (RX)
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
Standby master station
Remote
Remote
output (RY)
input (RX)
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
Remote I/O station
(station No.: 2, number of
occupied stations: 1)
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
(station No.: 2, number of
occupied stations: 1)
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
(station No.: 3, number of
occupied stations: 1)
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Remote I/O station
(station No.: 3, number of
occupied stations: 1)
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F