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4.5 Built-in PLC Function 
The PLC ladder logic can be created and downloaded using the TECO drive link software. 
4.5.1 Basic Command 
 
 
 
   
P 
   
NO / NC 
Inputs   I i 
I1I8 / i1i8 
Outputs Q Q Q Q Q q 
Q1Q2 / q1q2 
Auxiliary command  M  M  M  M  M  m 
M1MF / m1mF 
Special registers          V1~V7 
Counter function  C    C  c  C1~C8 / c1~c8 
Timer function  T      T  t 
T1T8 / t1t8 
Analog comparison function  G    G  g 
G1G8 / g1g8 
Operation control function  F   F f F1~F8 / f1~f8 
summation and subtraction function  AS        AS1~4 
Multiplication and division function  MD        MD1~4 
 
Description of registers 
V1: Set frequency                   Range: 0.1~1200.0Hz 
V2: Operation frequency             Range: 0.1~1200.0Hz  
V3: AI1 input value  Range: 0~1000 
V4: AI2 input value  Range: 0~1000 
V5: Keypad input value          Range: 0~1000 
V6: Operation current                Range: 0.1~999.9A 
V7: Torque value                    Range: 0.1~200.0% 
 
Command  Upper Differential  Lower Differential Other command symbol 
Differential command 
D d   
SET command 
 
 
RESET command 
 
 
P command 
  P 
 
Open circuit 
“  “   
Short circuit 
“--”  
 
Connection symbol  Definition  
─  Connect components on the left and right side 
┴  Connects components on the left , right and top side 
┼  Connects components on the left , right , top and bottom side 
┬  Connects components on the left , right and bottom side