ABB FPBA-01 Handbuch PDF herunterladen (Seite 86)

Starting up fieldbus communication and programming the ABB PLC (one-drive system)

Row 0001

This section is the main switch. When the drive needs to be stopped, function block

SEL sets the value of output pos_step to 0. Otherwise the value of output pos_step

remains unchanged and the program keeps running.

Row 0002

This section starts up the whole program sequence and repeats it as long as the

value of input move_toggle1 is TRUE.

Block trigger2 is needed for the first start-up. The block triggers one time when the

value of input move_toggle1 turns to TRUE.

The output of block OR is TRUE, when the trigger block output is TRUE. In this

case, block SEL selects value 1 to output pos_step.

Row 0003

This section compares the value of input pos_step with 1. When the values match,

block EQ returns the value of its output to TRUE.

TON block pause1 sets its output movement1 to TRUE with a delay of one second.

The program runs through sections 4 and 5, there is nothing to do.

Row 0006

This section executes MC_MoveAbsolute block togglemove1. The block moves

axis1 to position 800. After the movement, the value of output togglemove1.Done is

TRUE.

Now the program runs through sections from 7 to 3, there is nothing to do.

Section 4 is executed.

Row 0004

The values of inputs move_toggle1 and togglemove1.Done in the AND block are

TRUE. Block SEL sets the value of its output pos_step to 2.

Row 0005

This section is similar to section 3. Block EQ compares the value of its input

pos_step with 2. Now, the values match and the output of block EQ returns to

TRUE.

TON block pause2 sets its output movement2 to TRUE with a delay of one second

The program runs through section 6, there is nothing to do.

Row 0007

This block executes MC_MoveAbsolute block togglemove2. The block moves axis1

to position -1200. After the movement, the value of output togglemove2.Done is

TRUE.

The program starts the whole sequence again from row 0002. The toggling is

continuous as long as the value of input move_toggle1 is TRUE.

Tool/Step

Programming actions

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ABB FPBA-01 Handbuch Seite 86