Delta AS16AP11P-A User Manual

Chapter 11 CPU Module Operating Principle
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11.1.2 I/O Refreshing and Communication Service
 Refreshing I/O
The CPU module reads external I/O data periodically or outputs data to an external I/O. Refreshing the
I/O includes the following.
 Refreshing data in a digital I/O module
 Refreshing data in an analog I/O module
 Refreshing data in a network module
All I/O refreshing executes in the same loop. The data in an input device refreshes before a program
executes, and the data in an output device refreshes after the program executes.
Unit Maximum data exchange Data exchange area
Digital I/O module
Depends on the number of input/output
channels in the unit.
Input relay/Output relay
Analog I/O module
Depends on the number of input/output
channels in the unit.
Data register
Network module Depends on the unit. Data register
 Communication service
Communication service is the unscheduled communication service for a network module. It includes the
communication requests sent from external equipment to a CPU module, and the communication requests
sent from the CPU module to the external equipment.
11.2 CPU Module Operating Modes
11.2.1 Operating Modes
There are two operating modes. They can be used to control a user program and all tasks.
STOP mode: A program is not executed under this mode. Users can download a module table, initialize CPU
configuration and other setting, download a program, check a program, and force a bit ON/OFF.
RUN mode: A program is executed under this mode. Users can not download a module table, and initialize
CPU configuration and other setting.

Delta AS16AP11P-A Specifications

General

Brand	Delta
Model	AS16AP11P-A
Category	Control Unit
Language	English