21
2-1-2 Characteristics
Item CPM1A-10CDR-
CPM1A-10CDT-D
CPM1A-10CDT1-D
CPM1A-20CDR-
CPM1A-20CDT-D
CPM1A-20CDT1-D
CPM1A-30CDR-
CPM1A-30CDT-D
CPM1A-30CDT1-D
CPM1A-40CDR-
CPM1A-40CDT-D
CPM1A-40CDT1-D
Control method Stored program method
I/O control method Cyclic scan with direct output; immediate refresh processing
Programming language Ladder diagram
Instruction length 1 step per instruction, 1 to 5 words per instruction
Types of instructions Basic instructions: 14
Special instructions: 77 types, 135 instructions
Execution time Basic instructions: 0.72 to 16.2 µs
Special instructions: 16.3 µs (MOV instruction)
Program capacity 2,048 words
Max. I/O CPU Unit only 10 points 20 points 30 points 40 points
capacity With
Expansion I/O
Units
--- --- 50, 70, or 90 points 60, 80, or 100 points
Input bits 00000 to 00915 Words not used for input or output bits can
Output bits 01000 to 01915 be used for work bits.
Work bits 512 bits:20000 to 23115 (Words IR 200 to IR 231)
Special bits (SR area) 384 bits:23200 to 25515 (Words IR 232 to IR 255)
Temporary bits (TR area) 8 bits (TR0 to TR7)
Holding bits (HR area) 320 bits:HR 0000 to HR 1915 (Words HR 00 to HR 19)
Auxiliary bits (AR area) 256 bits: AR 0000 to AR 1515 (Words AR 00 to AR 15)
Link bits (LR area) 256 bits:LR 0000 to LR 1515 (Words LR 00 to LR 15)
Timers/Counters 128 timers/counters (TIM/CNT 000 to TIM/CNT 127)
100-ms timers: TIM 000 to TIM 127
10-ms timers (high-speed counter): TIM 000 to TIM 127 (see note 1)
(the timer numbers used are the same as for the 100-ms timers)
Decrementing counters and reversible counters
Data memory Read/Write: 1,024 words (DM 0000 to DM 1023)
Read-only: 512 words (DM 6144 to DM 6655)
Interrupt processing
(see note 2) External interrupts: 2 External interrupts: 4
Interval timer interrupts 1 (0.5 to 319,968 ms in Scheduled Interrupt Mode or Single Interrupt Mode)
Memory protection HR and read/write DM area contents; and counter values maintained during power
interruptions.
Memory backup Flash memory:
The program, read-only DM area, and PC Setup area are backed up without a battery.
Capacitor backup:
The read/write DM area, error log area, HR area, and counter values are backed up by a
capacitor for 20 days at 25C. The capacitor backup time depends on the ambient
temperature. See the graph on the following page for details.
Self-diagnostic functions CPU Unit failure (watchdog timer), I/O bus error, and memory failure
Program checks No END instruction, programming errors (continuously checked during operation)
High-speed counter One high-speed counter: 5 kHz single-phase or 2.5 kHz two-phase (linear count method)
Increment mode: 0 to 65,535 (16 bits)
Up/Down mode: –32,767 to 32,767 (16 bits)
Quick-response inputs The same inputs are used for quick-response inputs and external interrupt inputs.
(Min. input pulse width: 0.2 ms)
Pulse output One point, 20 Hz to 2 kHz (single-phase output)
Can preset the pulse rate (1 to 16,777,215).
Input time constant Can be set to 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms, or 128 ms.
Analog controls 2 controls, setting range: 0 to 200 BCD
Specifications Section 2-1