Using EZ LADDER® Functions

This section of the EZ LADDER® tutorial you will create ladder diagrams using commonly used functions. Prior to this section, you should have completed all previous sections to understand the basics of how to use EZ LADDER® .

For this section of the tutorial, you will need the following:

1. Installed, Licensed copy of Divelbiss EZ LADDER® .
2. PLC on a Chip based product.
3. Null Modem Cable.
4. Switches (or other devices) wired to the product's digital inputs (used to change the real world I/O status when running programs).
5. Switch or pulse device wired to the counter input (used to simulate a pulse train).

The following functions and objects will be used:

1. Timers
   1. TON - Timer on delay
   2. TOF - Timer off delay
   3. TP - Pulse timer
   4. HIGH_SPD_TMR - High Speed Timer
2. Counters
   1. CTU - Count up
   2. CTD - Count down
   3. CTUD - Count up or down
   4. CNTRTMR - Counter / Timer using Counter Input
3. Drum Sequencers
4. Coils / Contacts
   1. Latch Coil
   2. Unlatch Coil
5. Bit Manipulation
   1. ROL - Rotate Left
   2. ROR - Rotate Right
   3. SHL - Shift Left
   4. SHR - Shift Right
   5. AND
   6. OR
   7. NOT
   8. XOR
6. Time / Date
   1. SETDATE
   2. SETTIME
   3. GETDATE
   4. GETTIME
7. Bistables
   1. RS - Reset Dominant Bistable
   2. SR - Set Dominant Bistable
8. Math Functions
   1. ADD - Addition
   2. SUB - Subraction
   3. MULT - Multiplication
   4. DIV - Division
   5. MOD - Modulo
9. Comparisons
   1. < - Less than
   2. > - Greater than
   3. <= - Less than or equal to
   4. >= - Greater than or equal to
   5. <> - Not equal to
   6. = - Equal to
10. Conversion Blocks
    1. REAL - Converts to real variable
    2. INTEGER - Converts to integer variable
    3. BOOLEAN - Converts to boolean variable
    4. TIMER - Coonverts to timer variable
11. Others
    1. LIMIT - Limits variable range
    2. MIN - Outputs smallest of the variables
    3. MAX - Outputs the largest of the variables
    4. MUX - Multiplexes variables
    5. AVG - Averages the variables
    6. CMP - Compares variables
    7. F_TRIG - Falling edge trigger
    8. R_TRIG - Rising edge trigger
    9. SEL - Selection block