A-B 1756-L61

A-B 1756-L61 is a ControlLogix series controller designed by Allen-Bradley(a brand of Rockwell Automation).The following is a detailed introduction to A-B 1756-L61:

1.Basic features

Model:1756-L61.

Series:ControlLogix.

Designed by:Allen-Bradley/Rockwell Automation(Rockwell Automation).

A-B 1756-L61

2.Technical specifications

Processor power:Supports backup battery,which can be replaced when the battery is worn;can handle up to 32 tasks at a time,and each task can handle up to 100 programs.

Controller connection:Can handle up to 250 controller connections.

Memory:Use CompactFlash card as backup memory,optional non-volatile storage memory is 128MB(using 1784-CF128 CompactFlash memory card).Has integrated 2MB user memory.

Compatible chassis:1756-A4,1756-A7,1756-A10,1756-A13,and 1756-A17.

Communication options:Supports ControlNet,Data Highway Plus,EtherNet/IP,DeviceNet,SynchLink,remote I/O,and third-party process and device networks.

I/O capabilities:Maximum digital I/O is 128,000,maximum analog I/O is 4,000,and maximum total I/O is 128,000(some say it can handle 28,000 discrete and 4,000 analog I/O).

Physical features:Chassis-based controller that can be placed in any available slot of the 1756 ControlLogix chassis;has an open cabinet style.

Power and power consumption:Current consumption is 1200 mA at 5.1V DC and 14 mA at 24V DC;power consumption is 3.5W,and heat dissipation is 11.9BTU/hr.

A-B 1756-L61

3.Interface and Communication

RS-232 Port:Built-in RS-232 serial communication port,supported protocols are DF1 full/half duplex,ASCII,DF1 radio modem,Modbus via logic and DH-485.

Other Communications:Supports integrated motion through embedded SERCOS interface,analog input options such as encoder input,LDT input and SSI input.If used with Ethernet communication module,motion can be achieved through Ethernet I/P.

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