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1. SPECIFICATIONS OF MOTION SYSTEM COMPONENTS
1
−
13
(3) SCPU performance specifications and functions
(a) SCPU performance specifications
As the SCPU performance specifications differ according to the operating
system used, refer to the appropriate OS Programming Manual for details.
Table 1.2 Table of SCPU Performance Specifications
Item A173UHCPU(-S1) A172SHCPUN A171SHCPUN
Control method Stored programs repeated operation
I/O control method Refresh method Refresh method/direct method (selectable)
Programming language
Sequence control dedicated language
(Relay symbol language, logic symbol language, MELSAP-II (SFC))
Sequence instructions 22 26
Basic instructions 252 131
Special instructions 204 106
Number of instructions
Motion dedicated instructions 4 4
Direct method 0.25 to 1.9 s/step
Processing speed ( s)
(sequence instructions)
Refresh method 0.15
s/step 0.25 s/step
No. of I/O points 8192 points (X/Y0 to 1FF) 2048 points (X/Y0 to X/Y7FF)
No. of real I/O points *
5
2048 points (X/Y0 to 7FF)
1024 points (X/Y0 to
X/Y3FF)
512 points (X/Y0 to X/Y1FF)
Watchdog timer (WDT) 200 ms fixed 10 to 2000 ms
Standard
192k bytes
(Equivalent to
A3NMCA-24)
Memory capacity (internal RAM)
-S1
768k bytes
(Equivalent to
A3AMCA-96)
192k bytes 64k bytes
Main sequence program Max. 30 k steps Max. 14k steps
Sub-sequence program Max. 30k steps None NoneProgram capacity
Micro computer program None Max. 58k bytes Max. 26k bytes
No. of internal relays (M) *
1
7144 points (M0 to M999,
M2048 to M8191)
1000 points (M0 to M999)
No. of latch relays (L) 1048 points (L1000 to L2047)
No. of step relays (S) 0 point (none at initial status)
No. of link relays (B) 8192 points (B0 to B1FFF) 1024 points (B0 to B3FF)
Points 256 points
*
3
Time setting Device
100 ms timer 0.1 to 3276.7s T0 to T199
10 ms timer 0.01 to 327.67s T200 to T255
100ms retentive timer 0.1 to 3276.7s No initial value
Timers (T)
Specifications
Set with parameters
Points 256 points
*
4
Setting range Device
Normal counter 1 to 32767 C0 to C255
Interrupt program counter 1 to 32767
C224 to C255
(No initial value)
Counters (C)
Specifications
Set with parameters
No. of data registers (D) *
1
8192 points (D0 to D8191) 1024 points (D0 to D1024)
No. of link registers (W) 8192 points (W0 to W1FFF) 1024 points (W0 to W3FF)
No. of annunciators (F) 2048 points (F0 to F2047) 256 points (F0 to F255)
No. of file registers (R) Max. 8192 points (R0 to R8191) (set with parameters)
No. of accumulators (A) 2 points (A0, A1)
No. of index registers (V, Z)
14 points
(V, V
1
to V
6
, Z, Z
1
to Z
6
)
2 points (V, Z)
No. of pointers (P) 256 points (P0 to P255)
No. of interrupt pointers (I) 32 points (I0 to I31)
No. of special-function relays(M) 256 points (M9000 to M9255)
Device
No. of special-function registers (D)
256 points (D9000 to D9255)