Description
Overview
Essential details:1747-L511 SLC 5/01 Processor and part of the SLC 500 system Allen-Bradley
Superiority products 1747-L511 SLC 5/01 Processor and part of the SLC 500 system Allen-Bradley
- The 1747-L511 is the entry-level processor of the modular style hardware of SLC 500. This processor has the most basic features having a 1KB memory which makes it capable of handling up to 3940 IO signals. However, this module does not support implementation of Remote I/O topology. It may only be expanded of a maximum Three (3) SLC chassis of any type or a maximum 30 IO slots. This processor is UL listed to US and Canadian Safety Standards, CE compliant, and C-Tick marked.
This processor has memory back-up option of Electrically Erasable Programmable Read-Only Memory (EEPROM) which is basically a non-volatile memory, This non-volatile memory may be used to permanently store a the Programmable Logic Controller (PLC) program to prevent accidental deletion that is commonly caused by power surges and draining of the battery. It may also be configured to automatically load the user program each time a power cycle is initiated.
The integrated memory of this processor is Random Access Memory (RAM) that is maintained by a Lithium battery that can last up to Two (2) years. The battery charge is indicated by the Battery Low LED light which activates when the battery voltage is low. This battery is replaceable with 1747-BA however, do not replace the battery with the power removed. The processor must be actively powered when replacing otherwise, the user programs gets deleted.
This processor has other installed LED status indicators aside from the battery indicator. These indicators include Run, CPU Fault, and Forced I/O.