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2 SYSTEM CONFIGURATION
(3) PLC control specifications
Item
Specification
Q170MSCPU Q170MSCPU-S1
PLC CPU area Q03UDCPU or equivalent Q06UDHCPU or equivalent
Control method Stored program repeat operation
I/O control mode Refresh mode
Sequence control language
Relay symbol language (ladder), logic symbolic language (list),
MELSAP3 (SFC), MELSAP-L, Structured text (ST)
Processing speed
(sequence instruction)
LD instruction 0.02 μs 0.0095 μs
MOV instruction 0.04 μs 0.019 μs
PC MIX value (instruction/μs) 28 60
Floating point addition 0.12 μs 0.057 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 30k steps (120k byte) 60k steps (240k byte)
CPU shared memory
QCPU standard memory 8k bytes
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) 4096 points
Internal relay (M)
Points by default
(changeable by parameters)
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) 2048 points
File register (R, ZR) 98304 points 393216 points
Step relay (S) 8192 points
Index register/Standard device 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
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