2. PERFORMANCE SPECIFICATIONS
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2. PERFORMANCE SPECIFICATIONS
2.1 SCPU Performance Specifications
Table 2.1 gives the performance specifications of the SCPU.
Table 2.1 SCPU Performance Specifications
Item A273UHCPU A173UHCPU(-S1)
Control method Stored program repeated operation
I/O control method Refresh mode/direct mode (selectable)
Programming language
Sequence control dedicated language
(Relay symbol language, logic symbol language, MELSAP II (SFC))
Sequence instructions 22
Basic instructions 252
Special instructions 204
Number of instructions
Motion dedicated instructions 4
Processing speed (µs)
(Sequence instruction)
Refresh method 0.15 µs/step
Number of I/O points 8192 (X/Y0 to X/Y1FFF)
Number of real I/O points 2048 (X/Y0 to X/Y7FF) 2048 (X/Y0 to X/Y7FF)
Watchdog timer (WDT) 2000ms
Standard
192k bytes(Equivalent to
A3NMCA-24)
Memory capacity (internal RAM) Max. 1024k bytes
-S1
768k bytes(Equivalent to
A3AMCA-96)
Main sequence program Max. 30 k steps
Program capacity
Sub-sequence program Max. 30 k steps
Number of internal relays (M) (Note-1)
8191 points
(M0 to M999, M2048 to M8191)
Number of latch relays (L) 1048 points (M1000 to M2047)
Number of step relays (S) 0 point (none at initial status)
Total 8191 points common to
M, L, S
(set with parameters)
Number of link relays (B) 8192 points (B0 to B1FFF)
Points 2048 points (256 points at initial status)
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
100 ms elapsed time indicator 0.1 to 3276.7s
none at initial
status
Expansion timer
Word device (D,
W, R) is used to
set time.
T256 to T2047
SpecificationsTimers (T)
Set with parameters
Points 1024 points (256 points at initial status)
Setting range Device
Normal counter 1 to 32767 C0 to C255
Interrupt program counter
Can be set within
the range
C244 to C255.
none at initial
status
Expansion counter
Word device (D,
W, R) is used to
set count value.
C256 to C1023
Specifications
Device
Counters (C)
Set with parameters
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