The A-B 1747-L541 is a PLC(Programmable Logic Controller)module from the Allen-Bradley brand.Specifically,it belongs to the SLC 5/04 controller in the SLC 500 series.The following is a detailed introduction to the module:
I.Basic attributes
Model:1747-L541
Brand:Allen-Bradley(A-B,part of Rockwell Automation)
Series:SLC 500 series
Function:PLC controller with integrated 16KB user memory
II.Technical specifications
Memory:16K,32K or 64K words of memory(16KB for 1747-L541)
I/O point control:Up to 4096 input and output points can be controlled
Communication:
Built-in DH+channel supports extended messaging capabilities and high-speed communication.
RS-232 channel to support DF1 radio modem,DH-485,ASCII and Modbus RTU communications.
The RS232 communication port can be configured for DF1 and DH485 point-to-point topologies,and DH+communication supports long-distance and multi-drop topologies.
Programming:Includes advanced math instructions and a variety of additional instructions.
A-B 1747-L541
Other features:
Supports remote I/O,DeviceNet direct and indirect addressing.
Typical program scan time per keyword is 0.9 milliseconds,and typical I/O scan time is 0.225 milliseconds.
Requires a backplane current load of 1 amp at 5 volts DC and 200 milliamps at 24 volts DC.
Has a 1 millisecond selectable timed interrupt(STI)and a 0.5 millisecond discrete input interrupt(DII).
Uses 64KB of memory based on 1747-M13 flash memory for program and data table storage.
A-B 1747-L541
III.Physical Features
Front panel:Includes a 3-position key switch for selecting run,remote or program mode.
Status indicators:Has run,FLT,battery,force,DH+and RS-232 LED status indicators for troubleshooting and diagnostics.
IV.Application scenarios and installation requirements
Application scenarios:Very suitable for use in medium-sized applications,and can implement distributed IO applications by using communication adapters on the CPU rack and communication scanners on the IO rack.
Installation requirements:An SLC 500 rack is required to install and connect to the electronic backplane,and the system power supply is required to power the internal circuits of the processor through the electronic backplane.
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