Watlow Series 920 Microprocessor-Based Ramping Control Uživatelský manuál stáhnout pdf (Strana 39)

Nested

LOOP

A “Nested” loop is a jump loop within a loop. You will be forced to a step either

forwards or backwards from your present location. When nested loops are

performed, they cannot break across other loops. Your JC can be from 0

100

with 0 being an infinite looping.

Step

SETPOINT

Step

SETPOINT

Step

JUMPLOOP

JC-01

Step

JUMPLOOP JS

JC-01

Step

SETPOINT

Step

JUMPLOOP

JC-01

Step

STOP

The steps in sequence will be:

1,2,

3,2,3,4,1, 2,

3,2,3,4,5,6,1,2,3,2,3,

4,1,2,3,2,3,4,5,6, 7.

Intertwined

LOOP

“Intertwined”

loop can break across

other

loops.

Step

SETPOINT

Step

SETPOINT

Step

JUMPLOOP

JC-01

Step

JUMPLOOP JS

JC-01

Step

STOP

Rules to Follow

The one basic rule that you must follow is that you can only have a

maximum of three consecutive jump loops.

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

SETPOINT

JUMPLOOP

JS-01

JC-01

JUMPLOOP

JS-01 JC-01

JUMPLOOP

JS-01

JC-01

JUMPLOOP

JS-01 JC-01

STOP

Your program will run until it reaches Step 5, and you will receive an

ER2 0039. This is the infinite looping error, and means that you have too

many consecutive loops.

Another rule to follow is that you cannot

JUMPLOOP

to a step that you are on.

You will receive an ER2 0039. Clear the error in the ER2 parameter under the

SYSTEM menu and retransmit your data.

Use simple loops in your program!

How To

Progam

the Series 920, Chapter

WATLOW

Series 920 User’s

Manual

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 79 80

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