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2 SYSTEM CONFIGURATION
(3) PLC control specifications
Item Specification
PLC CPU area
Program capacity, number of I/O points and number of extensions
were limited to Q03UDCPU
Control method Sequence program control method
I/O control mode Refresh mode
Sequence control language
Relay symbol language (ladder), logic symbolic language (list),
MELSAP3 (SFC), MELSAP-L, Structured text (ST)
LD instruction 0.02 μs
MOV instruction 0.04 μs
PC MIX value (instruction/μs) 28
Processing speed
(sequence instruction)
Floating point addition 0.12 μs
Total number of instructions 858
Operation (floating point operation) instruction Yes
Character string processing instruction Yes
PID instruction Yes
Special function instruction (Trigonometric function,
square root, exponential operation, etc.)
Yes
Constant scan 0.5 to 2000ms (Setting available in 0.5ms unit.)
Program capacity 20k steps (80k byte)
QCPU standard memory 8k bytes
CPU shared memory
Multiple CPU high speed
transmission area
32k bytes
No. of I/O device points (X/Y) 8192 points
No. of I/O points (X/Y)
512 points
(Up to 320 points (64 points
5 modules) is usable with I/O module.)
Internal relay (M) 8192 points
Latch relay (L) 8192 points
Link relay (B) 8192 points
Timer (T) 2048 points
Retentive timer (ST) 0 points
Counter (C) 1024 points
Data register (D) 12288 points
Link register (W) 8192 points
Annunciator (F) 2048 points
Edge relay (V) 2048 points
Link special relay (SB) 2048 points
Link special register (SW)
Points by default
(changeable by parameters)
2048 points
File register (R, ZR) 98304 points
Step relay (S) 8192 points
Index register/Standard devise register (Z) 20 points
Index register (Z)
(32-bit modification specification of ZR device)
Up to 10 points (Z0 to Z18)
(Index register (Z) is used in double words.)
Pointer (P) 4096 points
Interrupt pointer (I) 256 points
Special relay (SM) 2048 points
Special register (SD) 2048 points
Function input (FX) 16 points
Function output (FY) 16 points
Function register (FD) 5 points
Local device Yes
Device initial values Yes