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40 T1-16S User’s Manual
2. Specifications
2.2 Functional specifications
Item T1-16S
Control method Stored program, cyclic scan system
Scan system Floating scan or con stant scan (10 – 200ms, 10ms units)
I/O update Batch I/O refresh
(direct I/O instruction available at basic unit’s I/O)
Program memory (Note) RAM and EEPROM (no back-up battery required)
Program capacity 8K steps
(4K or 8K mode)
Programming language Ladder diagram with functi on block
Instructions Basic: 21
Function: 97
Execution speed 1.4µs/contact, 2.3µs/coil,
4.2µs/16-bit transfer, 6.5µs/16-bit addi tion
1 main program
1 sub-program (initial program)
1 timer interrupt (interval: 5 to 1000ms, 5ms units)
4 I/O interrupt (high-speed counter and interrupt input)
Program types
256 subroutines (up to 3 levels of nesting)
I/O register 512 points/ 32 words (X/XW, Y/Y W)
Auxiliary relay 4096 points/ 256 words (R/RW)
Special relay 1024 points/ 64 words (S/SW)
Timer 256 points (T./T)
64 at 0.01s, 192 at 0.1s
Counter 256 points (C./C)
Data register 4096 words (D)
User data
Index register 3 words (I, J, K)
Capacitor 1 hour (at 25°C)Memory
back-up Battery (option) Max. 2 years.
Min. 6 months. (Note)
(1) The user program stored in the EEPROM is transferred to the RAM
when power is turned on. Therefore, if the program is modified, it is
necessary to issue the EEPROM Write command from the programming
tool. Otherwise, the mo d ified program is over-written by original
EEPROM contents at the next initial load timing.
(2) The data of RAM and calendar IC are backed up by built-in capacitor
and optional battery.
(3) W hen the optional battery is used, replace the battery periodically with
referring to the tab le below.
Annual average air temperature
Under 30°C (86°F) Over 30°C (86°F)
Over 8 hours 2 years 1 yearOperation
time per day Under 8 hours 1 year 6 months
NOTE