2: MODULE SPECIFICATIONS
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Function Specifications (Slim Type CPU Module)
CPU Module Specifications
Note 1: When using a 64KB memory cartridge and WindLDR ver. 4.2 or higher.
Note 2: When using a CPU module with system program ver. 201 or higher and WindLDR ver. 4.2 or higher.
System Statuses at Stop, Reset, and Restart
Note: All expansion data registers are keep types. AS-Inter face operands (M1300-M1977 and D1700-D1999) remain
unchanged when the reset input is turned on.
CPU Module
FC4A-D20K3
FC4A-D20S3
FC4A-D20RK1
FC4A-D20RS1
FC4A-D40K3
FC4A-D40S3
Program Capacity
27,000 bytes
(4,500 steps)
31,200 bytes (5,200 steps)
64,500 bytes (10,750 steps) (Note 1, Note 2)
Expandable I/O Modules 7 modules
I/O Points
Input 12
Expansion: 128
12
Expansion: 224
24
Expansion: 224
Output 8816
User Program Storage EEPROM
RAM Backup
Backup Duration Approx. 30 days (typical) at 25°C after backup battery fully charged
Backup Data Internal relay, shift register, counter, data register, expansion data register
Battery Lithium secondary battery
Charging Time Approx. 24 hours for charging from 0% to 90% of full charge at 25°C
Battery Life Approx. 1000 cycles of discharging down to 10% and full charging
Replaceability Not possible to replace battery
Control System Stored program system
Instruction Words
35 basic
53 advanced
35 basic
72 advanced
Processing
Time
Basic instruction 1.65 ms (1000 steps) See page A-1.
END processing
0.64 ms (not including expansion I/O service, clock function processing, data
link processing, and interrupt processing) See page A-2.
Internal Relay 1024 1024 + 560 for AS-Interface operands (Note 2)
Shift Register 128
Data Register 1300 1300 + 300 for AS-Inter face operands (Note 2)
Expansion Data Register — 6,000
Counter 100 (adding, dual pulse reversible, up/down selection reversible)
Timer 100 (1-sec, 100-ms, 10-ms, 1-ms)
Input Filter 3 to 15 ms (selectable in increments of 1 ms)
Catch Input
Interrupt Input
Four inputs (I2 through I5) can be designated as catch inputs or interrupt inputs
Minimum turn on pulse width: 40 µs maximum
Minimum turn off pulse width: 150 µs maximum
Self-diagnostic Function
Power failure, watchdog timer, data link connection, user program EEPROM sum
check, timer/counter preset value sum check, user program RAM sum check,
keep data, user program syntax, user program writing, CPU module, clock IC, I/O
bus initialize, user program execution
Start/Stop Method
Turning power on and off
Start/stop command in WindLDR
Turning start control special internal relay M8000 on and off
Turning designated stop or reset input off and on
Mode Output
Internal Relay, Shift Register, Counter,
Data Register, Expansion Data Register
Timer Current Value
Keep Type Clear Type
Run Operating Operating Operating Operating
Stop (Stop input ON) OFF Unchanged Unchanged Unchanged
Reset (Reset input ON) OFF OFF/Reset to zero OFF/Reset to zero Reset to zero
Restart Unchanged Unchanged OFF/Reset to zero Reset to preset
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