Mitsubishi Electric MELSEC-Q Series User Manual page 140

(b) 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/RWw) of the master station are stored in inputs (RX/RWr) of the standby master station. By
transferring the inputs (RX/RWr) of the standby master station to the outputs (RY/RWw), outputs to the
slave stations are continued (shaded areas in the figure above). (
• Input of the standby master station
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
Inputs (RX/RWr) of the master station are stored in outputs (RY/RWw) of the standby master station.
By transferring the outputs (RY/RWw) of the standby master station to the inputs (RX/RWr), inputs from
the slave stations are continued (shaded areas in the figure above). (
138
Standby 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
Standby master station
(controlling)
Station number 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
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