1747-L551 is a high-performance PLC(Programmable Logic Controller)processor produced by Allen-Bradley(AB,a subsidiary of Rockwell Automation,USA),belonging to the SLC 500 series.The following is a detailed introduction to 1747-L551:

1.Basic information

Model:1747-L551

Brand:Allen-Bradley(Rockwell)

Series:SLC 500

Type:Processor/Controller

2.Technical specifications

Processor type:SLC 5/05 processor

User memory:16 KB(can store about 16,000 words)

I/O control:

Input items:4096

Output:4096

Analog I/O:480

Communication interface:

Ethernet port:supports SNMP,BOOTP,extended messaging functions and high-speed communication.

RS-232 port:supports DF1 full-duplex for point-to-point communication,and also supports DF1 half-duplex master devices and DF1 wireless modems.

Program scan time:Typical program scan time for each keyword is 0.9 milliseconds

I/O scan time:Typical I/O scan time is 0.225 milliseconds

Power supply requirements:The power supply voltage is 120V(may vary depending on version or configuration)

Other specifications:

Chassis module slots:30

Backup memory:Flash EPROM

Resolution and measurement accuracy:Both are 100(may vary in specific application scenarios)

III.Features

High performance:As a high-performance processor of the SLC 500 series,the 1747-L551 has faster communication speeds and shorter program execution times.

Remote I/O support:It has inter-channel,remote I/O and DeviceNet pass-through functions.

Real-time clock:Built-in real-time clock and calendar,convenient for time-related control and applications.

Online programming:Supports online and offline programming,including runtime editing,which improves programming flexibility and efficiency.

Multiple communication protocols:Support multiple communication protocols,convenient for data exchange and communication with other devices.

Modular design:Adopt modular design,easy to install and maintain.

IV.Application scenarios

The 1747-L551 controller is suitable for various industrial automation control systems,especially those requiring high performance,remote I/O support and multiple communication protocols.It is widely used in manufacturing,process control,building automation and other fields to meet various complex control needs.

 

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