Appendix BSpecifications
105
CPU Specifications
Control Method Stored program
I/O Control
Method
Cyclic scan and immediate processing are both possible.
Programming
Method
Ladder diagram
Instruction Length 1 address/instruction, 1 to 4 words/instruction
Number of
Instructions
CPU01-E/01-EC/03-E/21-E/23-E: 225 (14 basic instructions + 211 special instructions)
CPU31-E/33-E: 229 (14 basic instructions + 215 special instructions)
Execution Time Basic instructions: 0.375 to 1.313 µs Special instructions: Approx. 10 µs
Program Capacity 15.2K words max.
IR Area: I/O bits 480 bits
(00000 through 02915)
I/O bits for
Group-2
High-density
Units and
I/O bits for I/O Units
mounted to Slave
Racks: 800 bits
(05000 through
I/O bits for
Special I/O
Units: 1,600
bits (10000
I/O bits for
Optical I/O
Units: 512 bits
(20000 through
IR Area: Work bits 6,688 bits
(03000 through 23515,
30000 through 51115)
Group-2 B7A
Interface
Units: 320
bits (03000
through
04915)
09915) through 19915) 23115)
SR bits 1,016 (23600 through 25507 and 25600 through 29915)
TR bits 8 (TR 0 through 7)
HR bits 1,600 (HR 0000 through 9915)
AR bits 448 (AR 0000 through 2715)
LR bits 1,024 (LR 0000 through 6315)
Timers/Counters 512 (TIM/CNT 000 through 511) TIMs: 0 through 999.9 s
TIMHs: 0 through 99.99 s CNT: 0 through 9999 counts
DM words Read/write: 6,144 (DM 0000 through 6143)
Read only: 512 (DM 6144 through 6655)
3,000 words max. (DM 7000 through 9999)
RUN Output Contacts are closed while PC is in RUN mode and operating.
Max. switching capacity: 2A 250 VAC (resistive load)
0.5 A 250 VAC (inductive load, cosφ = 0.4)
2 A 24 VDC
Power Failure
Backup Function
Holds HR, AR, CNT, and DM, and clock (RTC) contents.
Clock Function Standard
Memory Backup
Time
The battery service life is five years at 25°C. The service life will be shortened if the battery is used
at higher temperatures.
Replace the battery within one week after the battery alarm indicator starts blinking. When
replacing the battery, install the new battery within five minutes after removing the old one.
Self-diagnostic
Function
CPU errors (watchdog timer), I/O verification errors, host link errors, memory errors, battery errors,
I/O bus errors, remote I/O errors, etc.
Program Check
Function
Carries out program checks at the beginning of operation for items such as no END instruction,
instruction errors, and so on.