| Model | 1747-L542 |
| Manufacturer | Allen-Bradley |
| Series | SLC 5/04 |
| Product Type | SLC Processor / CPU Controller |
| System | SLC 500 Modular System |
| Program Memory | 28K Words |
| Data Memory | 4K Words |
| Total Memory | 32K Words |
| Communication Port | Data Highway Plus (DH+) |
| Programming Port | RS-232 |
| Backplane | 1746 Chassis |
| Operating Temperature | 0 to 60 °C |
| Programming Software | RSLogix 500 |
| Mounting | 1746 SLC Chassis |