8.4 Program Instruction List
Figure 105: Program Instruction List
8.4.1 Program Flow Instructions
8.4.1.1 If/Then/EndIf
This is a program flow control instruction used to selectively run a section of code only if a logical test condition is true. If the test evaluates to true the code between the If/Then and Endif lines is executed. If the test evaluates to false the code is not executed and the program skips to the next line of code after the Endif.
Logical tests (AND, OR, NOT) can be used in the If/Then/ Endif instruction. Parenthesis "()" can be used to group the
logical tests.
Example:
If EZInput.1=ON Then
EZOutput.1=ON
EZOutput.2=OFF
Endif
Example:
If (EZInput.1=ON AND EZInput.2=OFF) Then
EZOutput.1=ON
EZOutput.2=OFF
Endif
Example:
If (SPInput.4=OFF) Then
Jog.0.PlusInitiate 'Vel=20in/s
Wait For SPInput.4=OFF
Jog.Stop
Endif
Example:
If (NOT SPInput.5=ON) Then
Jog.0.MinusInitiate 'Vel=20in/s
Wait For SPInput.5=OFF
Jog.Stop
Endif
8.4.1.2 Else
This program flow instruction is used in conjunction with the If/Then/Endif instruction. If the If/Then test condition evaluates to true the code after the If/Then and before the Else is executed. If the test evaluates to false the code between the Else and the Endif is executed.
Example:
If EZInput.1=ON Then
EZOutput.1=ON
EZOutput.2=OFF
Else
EZOutput.1=OFF
EZOutput.2=ON
Endif
Example:
If (SPInput.5=ON) Then
Jog.0.Vel = 1.0 'in/s
Else
Jog.0.Vel = 0.1 'in/s
Endif
8.4.1.3 For Count/Next
This instruction is used to execute a section of code a specific number of times.
The user must enter the two numbers that control the repeat count. This instruction can either count up or count down. If the first number provided by the user is larger than the second number, then the instruction will count down. If the first number provided by the user is smaller than the second number, then the instruction will count up. The
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