The Siemens C79-458-L7000-B315 is a legacy SIMATIC NET communication card designed for ISA bus architecture. This module facilitates MPI (Multi-Point Interface) and PROFIBUS DP communication, enabling reliable data exchange between industrial PCs and Siemens S7, M7, or C7 automation systems. As a discontinued component, it remains a critical spare part for maintaining older control environments that rely on ISA-based computing platforms.
Features
Supports MPI and PROFIBUS DP protocols for versatile industrial networking.
Designed for integration with Siemens S7, M7, and C7 series controllers.
Standard ISA bus interface for legacy industrial PC compatibility.
Reliable online connection for programming, monitoring, and data acquisition.
Technical Specifications
Manufacturer
Siemens
Order Code
C79-458-L7000-B315
Replacement/Spare Model
6ES7793-2AA01-0AA0
Interface Type
ISA Bus
Supported Protocols
MPI, PROFIBUS DP
Compatibility
SIMATIC S7, M7, C7 Systems
Status
Discontinued by Manufacturer
Installation Guidelines
Ensure the host industrial PC is powered down and disconnected from the main power supply before inserting or removing the ISA card.
Handle the card by its edges to avoid electrostatic discharge (ESD) damage to sensitive electronic components.
Ensure the card is fully seated in the ISA slot and secured with the appropriate mounting screw to prevent vibration-induced disconnection.
Verify that the system BIOS and operating system drivers are correctly configured to recognize the ISA resource allocation (IRQ/DMA) for the card.
Route communication cables away from high-voltage power lines and sources of electromagnetic interference (EMI) to maintain signal integrity.
FAQ
Is this card compatible with modern PCI or PCIe slots?
No, this card is designed specifically for the legacy ISA (Industry Standard Architecture) bus. It is not physically or electrically compatible with modern PCI or PCIe expansion slots.
Can this card be used as a direct replacement for 6ES7793-2AA01-0AA0?
Yes, the C79-458-L7000-B315 is listed as the corresponding model for the 6ES7793-2AA01-0AA0 spare part.
