30.3.2.2 Variable Type

There are nine variable types: Bit, Integer, Float, Real, Timer, Counter, Time, Date, and PID.

Bit Variable

1-bit variable that indicates ON/OFF with a value of either 0 (OFF) or 1 (ON).

Integer Variable

Signed variable with a 32-bit length that has integer values of -2147483648 (16#80000000) - 2147483647 (16#7FFFFFFF).

Float Variable

32-bit variables have a floating point value of +/-1.175494351e-38 to +/-3.402823466e+38 and 0. You can use up to 7 decimal places.

Real Variable

64-bit variables have a floating point value of +/-2.2250738585072014e-308 to +/-1.7976931348623158e+308 and 0. You can use up to 15 decimal places.

Timer Variable

Use timer variables to enable timer instructions.

Timer variables consist of the following five variables.

For details on instructions, refer to 32. Logic Instruction List Logic Instruction List.

Counter Variable

Use counter variables to enable counter instructions.

Counter variables consist of the following seven variables.

For details on instructions, refer to 32. Logic Instruction List Logic Instruction List.

Date/Time Variable

Use date/time variables to enable date/time instructions.

Date/time variables consist of the following three variables.

For details on instructions, refer to 32. Logic Instruction List Logic Instruction List.

Time Variable

Use time variables to enable time instructions.

The time variable consists of the following three variables.

For details on instructions, refer to 32. Logic Instruction List Logic Instruction List.

PID Variable

Use PID variables to enable PID instructions.

PID variables consist of the following eleven variables.

For details on instructions, refer to 32. Logic Instruction List Logic Instruction List.