Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8 Uživatelský manuál stáhnout pdf (Strana 166)

12Ć4 AutoMax Programming Executive Version 3.x

If there is any discrepancy between the information in the

configuration for the rack and an actual application task, the fault

code E" 0" is displayed on the AutoMax Processor and no

application

tasks are reĆstarted. In a multiple Processor configuration,

this check is performed by one Processor only. The particular

Processor on which the fault code appears bears no relation to the

location of the problem.

Tasks

are reĆstarted in order of priority from highest to

lowest on each

Processor module. Tasks with the same priority are started in

alphabetical order. Tasks on different Processors are not

synchronized. In addition, unless the programmer uses interrupts to

synchronize them, tasks on UDC modules are not synchronized with

tasks on AutoMax Processors.

Task execution always begins from the first statement in the task,

regardless of the point at which the task stopped. Tasks on different

UDC modules will be reĆstarted independently of each other. The

drive A task is always executed first, followed by the drive B task.

UDC task execution always begins from the first statement in the

task, regardless of the point at which the task may have been

stopped. After CCLK is enabled, the starting of tasks on all UDC

modules in the rack will be coordinated.

12.4.1 Application Tasks Not ReĆStarted with AUTOĆRUN

The following tasks are not reĆstarted automatically when the system

powers up and AUTOĆRUN is enabled.

1. Any

task that was was not in run when

power was turned off

. Y

must put the task into run manually

. See 15.0 for more

information about running tasks.

2. Any task that was stopped by a STOP or STOPĆALL command

issued from the personal computer. You

must put the task(s) into

run

manually

. See 15.0 for

more information about running tasks.

3. Any

task that was stopped by the occurrence of a STOP

ĆALL fault

described

in 10.12. Y

ou should first clear any error codes from

the error log or from Processor LEDs and then put the task into

run manually. See 19.0 for more information about clearing the

error log or LEDs and 15.0 for more information about running

tasks.

12.4.2 Application Task AUTOĆRUN and Memory

Fragmentation

Occasionally,

there may be insufficient memory in the Processor(s)

after a system reĆstart to accommodate application tasks that were

initially loaded (recall that the tasks must be built" again) due to

memory fragmentation. Since system reĆstarts are inevitable, after

loading the rack configuration and application tasks, you should

verify that there will be sufficient memory should a reĆstart occur. You

can do this by issuing a STOPĆALL command from the personal

computer or by cycling power and then checking that all application

tasks are present and installed

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