SST 5136-PFB-104 Control card

The 5136-PFB-104 is the next Generation Profibus PCI card. When possible, backward compatibility is maintained with the legacy 5136-PFB-104, but the new 5136-PFB-104 is not a drop in replacement for the existing 5136-PFB-PCI card. 

The 5136-PFB-104 card can: 

• Act as a DP slave 

• Act as a DP master • Send and receive FDL (layer 2) messages 

• Support Master Class 2 

• Support simultaneous operation in all of the above modes 

While control of the legacy 5136-PFB-104 card (for example, interrupts and reset) was handled by writing to the PCI configuration space (Section 2.4), this is no longer the case with the new 5136-PFB-104. The 5136-PFB-104 card is controlled through a separately mapped PCI memory area. This memory area is also used to access new features, like the ability to read the LED status (Section 2.2). The PCI configuration space of the new design does not normally need to be written to by the host application; it is normally only used by the host system drivers to determine where card resources have been allocated in the host system.