Continue Statement; Exit Statement - Siemens S7-1200 System Manual

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CONTINUE statement

Table 7- 124 CONTINUE statement

The CONTINUE statement executes according to the following rules:

● This statement immediately terminates execution of a loop body.

● Depending on whether the condition for repeating the loop is satisfied or not the body is

● In a FOR statement, the control variable is incremented by the specified increment

Use the CONTINUE statement only within a loop. In nested loops CONTINUE always refers

to the loop that includes it immediately. CONTINUE is typically used in conjunction with an IF

If the loop is to exit regardless of the termination test, use the EXIT statement.

The following example shows the use of the CONTINUE statement to avoid a division-by-0

error when calculating the percentage of a value:

FOR i := 0 TO 10 DO

IF value[i] = 0 THEN CONTINUE; END_IF;

Table 7- 125 EXIT instruction

An EXIT statement is used to exit a loop (FOR, WHILE or REPEAT) at any point, regardless of whether

the terminate condition is satisfied.

The EXIT statement executes according to the following rules:

● This statement causes the repetition statement immediately surrounding the exit

● Execution of the program is continued after the end of the loop (for example after

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

The CONTINUE statement skips the subsequent statements of a program loop (FOR,

WHILE, REPEAT) and continues the loop with the examination of whether the condition is

met for termination. If this is not the case, the loop continues.

executed again or the iteration statement is exited and the statement immediately

following is executed.

immediately after a CONTINUE statement.

p := part / value[i] * 100;

s := INT_TO_STRING(p);

percent := CONCAT(IN1:=s, IN2:="%");

statement to be exited immediately.

Basic instructions

7.8 Program control operations