MPN: 1747-L551 — industrial control spare part, in stock at TGK Parts.
The 1747-L551 is the Allen-Bradley SLC 500 processor with 32KB memory — the top CPU of the 5/05 line, with DH+ and RS-232 communication ports for plant-wide networking. Allen-Bradley discontinued the entire SLC 500 platform, and L551 units in circulation are sourced, tested surplus.
TGK Parts sources 1747-L551 CPUs through a global surplus network. Each unit is bench-tested (program load, comms verification on DH+ and RS-232, battery and memory card check) before shipping. Program transfer support available — send your APS backup and we confirm the program loads cleanly.
| MPN | 1747-L551 |
|---|---|
| Type | SLC 500 processor (CPU) |
| Series | SLC 500 5/05 |
| Memory | 32 KB |
| Comms | DH+ (up to 76.8 kbps) + RS-232 (DF1) |
| Racks | 4/13, 4/14, 10/16 slots |
| Battery | 1747-BA lithium backup battery |
| Condition | Tested surplus / refurbished |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
No — the SLC 500 platform is discontinued. We supply tested surplus units with a 12-month warranty.
Yes — send your APS backup file and we load, verify and test the processor before shipping.
1747-BA lithium battery; we replace batteries on sourced units so your program survives power cycles from day one.
Yes — the L551 supports DH+ networking across SLC 500 racks. Send your network layout for a fit check.