Delta DVP-ES3 Series, Operation Manual, Page: 356 / 411

D V P - E S 3 S e r i e s O p e r a t i o n Ma n u a l
11 - 2
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11.1 CPU Module Operations
11.1.1 Procedure
The following diagram describes the operation of the CPU module.
The CPU module is supplied with power.
The system enables the initialization.

The non-latched memory is initialized.

The downloaded program is checked.

The parameters in the CPU module are checked.

The parameters in the module table are checked.

The module table in the CPU module is compared
with the actual I/O configuration.

The I/O setting is downloaded to the I/O module.

If the memory card is installed, whether to execute
the system copy procedure or not is checked.
Diagnosis processing:

The memory card and other setting are checked.

The I/O bus is checked.

The system parameter is checked.
The data sent to the I/O module is refreshed.

The data sent to the digital I/O module is refreshed.

The data sent to the analog I/O module is refreshed.

The data sent to other modules are refreshed.
Program execution:

The user program is executed.

The interrupt subroutine is executed.
The data sent from the I/O module is refreshed.

The data sent from the digital I/O module is
refreshed.

The data sent from the analog I/O module is
refreshed.

The data sent from other modules are refreshed.
Communication service:

The communication through the CPU module

The communication through other I/O modules

The internal communication between the CPU
module and the I/O module