Mitsubishi Electric Melsec Q Series User Manual page 97

3
SPECIFICATIONS
(3) System switching condition setting area (Disconnected station
detection) (Un\G23648 to Un\G23656)
When the QJ71PB92V is mounted on a redundant system, this area is used to set the
switching target DP-Slaves. (Initial value: 0000
(a) System switching condition (Un\G23648)
(b) System switching DP-Slave specification (Un\G23649 to Un\G23656)
Address
DEC(HEX)
b15 b14 b13 b12 b11 b10 b9 b8 b7
23649(5C61 ) 16
H
23650(5C62 )
32
H
23651(5C63 )
48
H
23652(5C64 ) 64
H
23653(5C65 )
80
H
23654(5C66 ) 96
H
23655(5C67 )
112
H
23656(5C68 )
*1
H
*1 The bits, b15 to b12 of address 23656 (5C68
Figure 3.35 System switching DP-Slave specification (Un\G23649 to Un\G23656)
System switching condition setting area
(Disconnected station detection)
(Un\G23648 to Un\G23656)
Data exchange start request signal (Y00)
Data exchange start completed signal (X00)
System switching condition setting result area
(Disconnected station detection)
(Un\G23664 to Un\G23672)
Figure 3.36 Operation in System Switching Condition Setting Area (Disconnected station detection)
Set AND or OR as a condition for the setting in the System switching DP-Slave
specification (Un\G23649 to Un\G23656).
0: OR condition(If a communication error occurs on any of the specified DP-
Slaves, the systems are switched.)
1: AND condition (If a communication error occurs on all of the specified DP-
Slaves, the systems are switched.)
Set the target DP-Slaves for the system switching. (Initial value: 0000
0: Not system switching target
1: System switching target
15 14 13 12 11 10 9
31 30 29 28 27 26 25
47 46 45 44 43 42 41
63 62 61 60 59 58 57
79 78 77 76 75 74 73
95 94 93 92 91 90 89
111 110 109 108 107 106 105
*1 *1 *1 124 123 122 121
By turning ON the Data exchange start request signal (Y00), the DP-Slaves
specified in the System switching condition setting area (Disconnected station
detection) (Un\G23648 to Un\G23656) become the target for system switching.
3.4 Buffer Memory
3.4.14 Redundant system area
)
H
b6 b5 b4 b3 b2 b1 b0
8 7 6 5 4 3 2
24 23 22 21 20 19 18
40 39 38 37 36 35 34
56 55 54 53 52 51 50
72 71 70 69 68 67 66
88 87 86 85 84 83 82
104 103 102 101 100 99 98
120 119 118 117 116 115 114
) are fixed to 0.
H
Specifies system switching condition
ON
OFF
OFF
Settings
system switching
condition
)
H
Each bit represents
1
the n-th DP-Slave
17
33
49
65
81
97
113
ON
Stores result data
3
- 56
1
2
3
4
5
6
7
8