Redundant Cpu - Mitsubishi Melsec-Q Series User Manual

4.1.4 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)
(drive 2)
*1
Memory size
Standard RAM
(drive 3)
Standard ROM
(drive 4)
CPU shared
memory
*1: The unit of the file size stored in the memory area varies 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 as shown below.(Program size) - (File header size (default: 34 steps))
For details, refer to the following.
Qn(H)/QnPH/QnPRHCPU User's Manual (Function Explanation, Program Fundamentals)
4 - 12
Table4.4 Performance specifications
Q12PRHCPU
Stored program repeat 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 (2M bytes max.)
Size of the installed memory card
(Flash card: 4M bytes max., ATA card: 32M bytes max.)
Size of the installed memory card (2M bytes max.)
496K bytes
Redundant CPU
Q25PRHCPU
Refresh mode
34ns
102ns
(1008 bytes)
1008K bytes
1008K bytes
----
252K steps