Echelon PCLTA Network Interface - Manual (Page 18)

10 Electrical and Mechanical Interfaces
PCLTA-21 Board Layout
The following figure shows the layout of the PCLTA-21 card Models 74501, 74502, 74503, and
74504.
The PCLTA-21 card Model 74504 (TP-RS485) includes jumpers that must be configured to set the
correct speed on the RS-485 channel.
P1 and P2 PCI Bus Connector
The pinout of the PCI connector is the standard pinout for the 32-bit PCI bus used in Windows-
compatible computers. The power drawn from the host is 250 mA @ 5 VDC, typical.