Mitsubishi Electric MELSEC iQ-R Series User Manual page 46

Overview of data transmission
The following is an overview of data transmission of when the standby master function is used.
■When data link is controlled by the master station
(Output from the master station)
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
Outputs (RY and RWw) from the master station are stored in inputs (RX and RWr) of the standby master station. (Shaded
areas in the figure above)
(Input of the master station)
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
Inputs (RX and RWr) from slave stations to the master station are stored in outputs (RY and RWw) of the standby master
station. (Shaded areas in the figure above)
■Operation between the master station going down and the standby master station controlling
data link
If the master station goes down, the standby master station takes over the control of data link.
(Output from the standby master station)
Master 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
Outputs (RY and RWw) of the master station are stored in inputs (RX and RWr) of the standby master station. By transferring
the inputs (RX and RWr) of the standby 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)
1 FUNCTIONS
44
1.3 Standby Master Function
Standby master station (standby status)
(station No.: 1, number of
occupied stations: 1)
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
Standby master station (standby status)
(station No.: 1, number of
occupied stations: 1)
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
Standby master station
(controlling)
(station No.: 1→0)
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
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.: 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
Remote I/O station
(station No.: 3, number of
occupied stations: 1)
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F