Mitsubishi MELSEC-A A2USHCPU-S1 User Manual page 225

APPENDICES
Number Name
ROM/RAM
setting
D9016
Program
number
D9017 Scan time
D9018 Scan time
D9019 Scan time
*2
Constant scan
D9020
D9021 Scan time
1 second
D9022
counter
Table App2.2 Special Register List (Continue)
Description
0: ROM
• Indicates the setting of memory select chip. One value
1: RAM
of 0 to 2 is stored in BIN code.
E 2 PROM
2:
0: Main program
(ROM) • Indicates which sequence program is run presently.
1: Main program One value of 0 to 2 is stored in BIN code.
(RAM) ("2" is not stored when AnS, AnSH, A1FX, A0J2H,
2: Subprogram A2C, A2, A2N, A2A, A2AS and A2U is used.)
(RAM)
0: Main program
(ROM)
1: Main program
(RAM)
2: Subprogram 1
(RAM)
3: Subprogram 2
(RAM)
4: Subprogram 3
(RAM)
5: Subprogram 1
(ROM) • Indicates which sequence program is run presently.
6: Subprogram 2 One value of 0 to B is stored in BIN code.
(ROM)
7: Subprogram 3
(ROM)
8: Main program
(E 2 PROM)
9: Subprogram 1
(E 2 PROM)
A: Subprogram 2
(E 2 PROM)
B: Subprogram 3
(E PROM)
2
• If scan time is smaller than the content of D9017, the
Minimum scan time value is newly stored at each END. Namely, the
(per 10 ms) minimum value of scan time is stored into D9017 in
BIN code.
• Scan time is stored in BIN code at each END and
Scan time (per 10 ms)
always rewritten.
• If scan time is larger than the content of D9019, the
Maximum scan time value is newly stored at each END. Namely, the
(per 10 ms) maximum value of scan time is stored into D9019 in
BIN code.
• Sets the interval between consecutive user program
Constant scan time starts in multiples of 10 ms.
(Set by user in 10 ms 0:
increments) 1 to 200: Set. Program is executed at intervals of (set
• Scan time is stored and updated in BIN code after
Scan time (1 ms unit)
every END.
• When the PC CPU starts running, it starts counting 1
every second.
Counts 1 every
• It starts counting up from 0 to 32767, then down to -
second.
32768 and then again up to 0. Counting repeats this
routine.
Details
No setting
value) × 10 ms.
APP - 30
Applicable CPU
Usable with A1
—
and A1N.
Unusable with
A1 and A1N
Dedicated to
—
AnU.
Usable with all
types of CPUs.
Usable with all
types of CPUs.
Usable with all
types of CPUs.
Unusable with
An.
—
Usable with
AnA, A2AS,
AnU, AnA board
and QCPU-A
—
(A Mode).