Lg Electronics 120S User Manual

5-2 

 

 

 

The following table shows the general specifications of the MASTER-K120S series 

 

 

Specifications 

Items 

K7M-DR/DRT/DT20U 

K7M-DR/DRT/DT30U 

K7M-DR/DRT/DT40U K7M-DR/DR`T/DT60U 

Remarks 

Program control method  Cyclic execution of stored program, Time-driven interrupt, Process-driven interrupt 

 

I/O control method 

Indirect mode(Refresh method), Direct by program command 

 

Program language 

Instruction list, Ladder diagram 

 

Numbers of instructions 

Basic : 30, Application : 277 

 

Processing speed 

0.1

µs/step 

 

Program capacity 

10ksteps 

 

I/O 

points 

20 30  40 60 

 

P 

P000 ~ P63F 

I/O relay,TR.

M 

M000 ~ M191F   

Auxiliary relay

K 

K000 ~ K31F   

Keep relay 

L 

L000 ~ L63F   

Link relay 

F 

F000 ~ F63F   

Special relay

T 

100msec : T000 ~ T191 (192 points) 

10msec : T192 ~ T250 (59 points) 

1msec : T251 ~ T255 (5 points) 

-. Adjustable by parameter setting 

Timer 

C 

C000 ~ C255   

Counter 

S 

S00.00 ~ S99.99   

Step controller

Memory 

device 

D 

D0000 ~ D4999   

Data register

Operation modes 

RUN, STOP, PAUSE, DEBUG 

 

Self-diagnosis functions  Detects errors of scan time, memory, I/O and power supply 

 

Data back-up method 

Latch area back-up 

 

Max. expansion level 

Up to 3 level 

(External memory or RTC module can be connected as 4th expansion module)