PCI302 - Operation & Maintenance Instructions Manual
5
Software Overview
Application
Clients
SYSCON
OLE DCOM
PCI OLE Server
0
PCIs
FIELDBUS
PC
Server
0
0
1
1
1
2
2
2
3
3
3
PCI NT Device Driver
PCI
1
PCI
7
PCI
0
FBTOOLS
Figure 4 – PCI302 Hierarchy Layers.
HMI (Human-Machine Interface)
User application program (configurator, supervisory, analyzer, etc.) running on PC(s) and interfacing
with the PCI302 card through a specific server for the services.
PCI OLE Server
Server for PCI302s based on Client/Server architecture, providing a consistent set of functions for
Supervision and Configuration. It standardizes and simplifies the HMI access to the hardware.
PCI302 Device Driver
Specific hardware driver for Windows NT and 2000 Operating System, implementing effectively the
access to local PCI302s.
DP (Dual Port RAM)
Memory shared by the PCI302 and PC, at hardware and software levels, which contains all
structures required for data and command transfer between them.
CH
0 - 63
(PCI302 Fieldbus ports 0 - 63)
The card independent ports, running inside the PCI302. Each one includes the Physical layer and
part of the Data Link layer.
PCI302
1/8
(Process Control Interface 1 to 8)
A maximum of 8 PCI302 cards may coexist in a PC bus, totaling 32 ports.
Interfacing with HMI (Human-Machine Interface)
A generic HMI (Human-Machine Interface), like supervisory systems, configurators, etc., interfaces
with Smar Fieldbus devices through the PCI302 card, using the PCI OLE Server specification. The
generic HMI may work under Windows 95, NT and 2000.
The PCI OLE Server is a 32-bit version server for Windows NT (in compliance with OPC - OLE for
Process Control specification). This enables OPC clients to supervise the Fieldbus system through
Smar interfaces, in a standardized way (without specific drivers).
For other platforms (OS/2, QNX, etc.), system integrators may also write drivers that access the
PCI302 directly, since Smar provides no drivers for them.
