These processors had an average scan time of 8ms per 1K of program and supported 52 Ladder Logic instructions. While the L514 used battery backed memory, the L511 had capacitor backed memory with the option to use a battery.īoth 5/01 models were said to be capable of controlling up to 3840 digital I/O points across a maximum of 3 I/O Chassis and 30 I/O Slots. It launched in a 1K memory version (1747-L511,) which was quickly followed by a 4K version (1747-L514.) The first controller to come out for SLC-500 modular systems was the 5/01. The 5/01 and Fixed Controllers: Modular and Brick
A more detailed description and development of SLC-500 family of Programmable Logic Controllers The 5/05 had a serial port but also was the first to provide Ethernet communications. The 5/04 had even more memory and a faster communications platform called DH+ (“Data Highway Plus”). The 5/03 was the first processor where logic could be edited online in real time without having to place the processor in program mode and download. The 5/02 and 5/03 platforms had DH485 (“Data Highway”) communications. Processors had more memory, faster speeds, and enhanced communication capabilities. The I/O cards also available in a rack.ĭifferent type of i/o card having digital, analog and special purpose I/O such as thermocouples and High-Speed Counters. This processor was used in a rack with power supply. The first rack-based SLC was the SLC5/01. This platform was physically smaller and less expensive than the PLC5, with a reduced instruction set nearly identical to the PLC-5. SLC500: In 1991 Allen-Bradley released the first SLC500. with 1K of memory and was used in small i/o application The first SLC, Known simply as an SLC500, was an integrated platform containing the CPU, power supply, and IO all in one package. SLC full name is “Small Logic Controller”.
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