Mitsubishi Electric MELSEC-Q Series User Manual page 142

(d) 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 number 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
Outputs (RY/RWw) of the standby master station are stored in inputs (RX/RWr) of the master station. By
transferring the inputs (RX/RWr) of the master station to the outputs (RY/RWw), outputs to the slave
stations are continued (shaded areas in the figure above). (
• Input of the master station
Master station (controlling)
Station number 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
Inputs (RX/RWr) of the standby master station are stored in the outputs (RY/RWw) of the master station.
By transferring the outputs (RY/RWw) of the master station to the inputs (RX/RWr), inputs from the slave
stations are continued (shaded areas in the figure above). (
140
Standby 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
Standby 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
Remote I/O station
Station number 2
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Page 147, Section 8.2.5 (7))
Remote I/O station
Station number 2
Occupies 1 station
X00 to X0F Y00 to Y0F
X10 to X1F Y10 to Y1F
Page 147, Section 8.2.5 (7))
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