Redundant Cpu - Mitsubishi Electric Q26UD(E)HCPU User Manual

6.2.4

Redundant CPU

Item
Control method
I/O control mode
Sequence control
language
Program
language
Process control
language
Processing
LD X0
speed
(sequence
MOV D0 D1
instruction)
Processing Tracking
speed execution time
(redundant (increased scan
function) time)
Constant scan
(Function for keeping regular scan
time)
*1, *2
Program size
Program memory
(drive 0)
Memory card
(RAM)
(drive 1)
Memory card
(ROM)
*1
Memory size
(drive 2)
Standard RAM
(drive 3)
Standard ROM
(drive 4)
CPU shared
memory
*1 The size unit of the files stored in the memory area differs depending on the CPU module. For details, refer to the
following.
Qn(H)/QnPH/QnPRHCPU User's Manual (Function Explanation, Program Fundamentals)
*2 The maximum number of executable sequence steps is obtained by the following formula.
(Program size) - (File header size (Default: 34 steps))
For details of the program size and files, refer to the following.
Qn(H)/QnPH/QnPRHCPU User's Manual (Function Explanation, Program Fundamentals)
*9 For the CPU module whose serial number (first five digits) is "16020" or earlier, the maximum memory card size is 2M
bytes.
156
Redundant CPU
Q12PRHCPU
Stored program cyclic operation
(Direct access I/O is available by specifying direct access I/O (DX, DY).)
Relay symbol language, logic symbolic language, MELSAP3 (SFC),
MELSAP-L, function block and structured text (ST)
FBD for process control (Programming by PX Developer)
Device memory 48k words: 10ms
Device memory 100k words: 15ms
( QnPRHCPU User's Manual (Redundant System))
0.5 to 2000ms (Setting available in 0.5ms unit) (Setting by parameters)
124K steps
(496 bytes)
496K bytes
Size of the installed memory card (4M bytes max.)
Size of the installed memory card
(Flash card: 4M bytes max., ATA card: 32M bytes max.)
496K bytes
Q25PRHCPU
Refresh mode
34ns
102ns
252K steps
(1008 bytes)
1008K bytes
256K bytes
1008K bytes
----
*9