Delta AH500 series Manual Page 21

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Chapter 1 Introduction of Products
(7) Task
The programs can be assigned to 283 tasks at most. Among the 288 tasks, 32 tasks are cyclic tasks,
32 tasks are I/O interrupts, 4 tasks are timer interrupts, 2 tasks are communication interrupts, 1 task is
an external 24 V low-voltage interrupt, and 212 tasks are user-defined tasks.
Users can enable and disable a task during the execution of a program by means of TKON and
TKOFF.
(8) Increasing the efficiency of configuring the hardware through an USB cable and ISPSoft
The AH500 series CPU module provides a standard USB 2.0 interface. USB 2.0 increases the data
transfer rate, and decreases the time it takes to download the program, monitor the program and
configure the hardware. Besides, users do not need to buy a communication cable for the CPU
module. They can use a general USB cable to connect to the AH500 series CPU module.
(9) Serial control interface with multiple functions
CPU530-RS2
RUN
ERROR
BUS FAULT
SYSTEM
COM1
COM2
C
O
M
C
O
M
2
1
USB
CPU530-EN
RUN
ERROR
BUS FAULT
SYSTEM
COM
Ethernet
COM
USB
AHCPU500/510/520/530-RS2 provides two DB9 serial control interfaces, i.e. COM1 and COM2.
AHCPU500/510/520/530-EN provides one DB9 serial control interface, i.e. COM.
Users can set the DB9 serial control interface to RS232, RS485, or RS422 according to the
application environment. The data transfer rate can be increased from 9600 bps to 1 Mbps.
1-11
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