User`s guide

PLCTA-20 PCI Interface User’s Guide 4-3
Figure 4.3 shows the layout of the PCLTA-20/SMX Interface and the PCLTA-20 Protocol
Analyzer Card. These cards are equipped with a header connector for an SMX
transceiver; they do not have an integral transceiver. Attach the SMX transceiver in
accordance with the manufacturer’s instructions – see the LONWORKS
®
SMX™
Transceiver Installation Instructions document 078-0145-01 version D or later if using
an Echelon SMX transceiver.
Figure 4.3 PCLTA-20 SMX Interface and PCLTA-20 Protocol Anlayzer
with PLM-22 SMX Transceiver Installed
P1 and P2 PCI Bus Connector
The pinout of the P1 and P2 connector terminals is the standard pinout for the 32-bit
PCI bus used in Windows-compatible PCs. The power drawn from the host is 250mA @
5VDC, typical. Actual power consumed for the SMX or protocol analyzer card will vary
according to the power needs of the selected SMX transceiver.
Network Connector
The PCLTA-20 Model 74401-74403 cards are supplied with a removable two terminal,
Weidmüller BLA connector (BLA 2B OG) for the network connection. The wiring to the
twisted pair channel is polarity insensitive. The connector will accept 12 to 26AWG
(1.2mm to 0.45mm) wire. See the Junction Box and Wiring Guidelines for Twisted
Pair LONWORKS Networks, LONWORKS FTT-10A Free Topology Transceiver User’s
Guide or the LONWORKS TPT Twisted Pair Transceiver Module User’s Guide for
information on suitable cables and cable distances.
The PCLTA-20 Model 74404 card is supplied with a removable three terminal,
Weidmüller BLA connector (BLA 3B OG) for the RS-485 network connection. The
wiring to the RS-485 twisted pair channel is polarity sensitive. The connector will