Application Scenarios
A steel processing plant operating a continuous casting line relied on an AutoMax control system installed in the mid-1990s. When the network communications module in the main control rack failed, the plant faced a critical decision: undertake a full system migration costing millions, or source a compatible replacement to extend the existing infrastructure‘s service life. The maintenance team located a tested 57C404C unit, which restored communication between the master processor and remote I/O racks within hours of installation. The module’s 7-segment fault code LED immediately confirmed proper network registration, and production resumed without the lengthy downtime associated with a system retrofit. For facilities maintaining AutoMax installations, the 57C404C represents a pragmatic bridge between proven legacy reliability and the economic realities of industrial maintenance budgets.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 57C404C |
| Original Manufacturer | Reliance Electric (now under Rockwell Automation) |
| Product Category | Network Communications Module |
| Compatible Series | AutoMax / DCS 5000 |
| Serial Compatibility | RS-232 |
| Memory | 4K Dual-Port |
| Power Requirements | 2.5A at 5V DC |
| Network Capacity | Up to 51 physical drops |
| Connection Media | Coaxial cable or fiber optic |
| Fault Diagnostics | 7-Segment Fault Code LED |
| Revision | C |
| User Manual | J-3001 |
| Ejector Tabs | 2 |
| Drop Configuration | Master or Slave |
