IF ....THEN.... problems

[El_AMPo]

You've got a redundancy in your code (maybe on purpose),

First you activate the timer = 1 flag, and in the next line of code you put an " IF timer = 1..."

Also the second IF THEN ELSE is inside the first IF THEN, try separating them.

Try using indent in your coding to see in a better way your routine operation

this is your code...commented

begin:
pause 100
IF timer = 1 AND relay = 1 THEN
    pause 500
    timer = 0 'turn off timer'
    PAUSE 1000
    portb.1 = 0
    timer = 1 'turn on timer'               '--turned timer = 1 

    IF timer = 1 AND relay = 1 THEN   '--inside first loop? move it out.  Timer already turned 1 on previous line, so is always true for that part
        pause 500
        timer = 0 'turn off timer'
        pause 1000
        portb.1 = 1
        pause 1000
        timer = 1 'turn on timer'
    ENDIF
ENDIF