Portwell PCI-ICM422/2 Operation & User’s Manual

21, Figure A-1: Typical RS485 Two-Wire Multidrop Network RS485 Four-Wire Multidrop Network An RS485 network can also be connected in a four-wire mode. In a four-wire network it's necessary that one node be a master node and all others be slaves. The network is connected so that t…

4, Table of Contents Chapter 1: Introduction..................................................................................................................................... 5 Specifications......................................................................................................…

2, Notice The information in this document is provided for reference only. Portwell does not assume any liability arising out of the application or use of the information or products described herein. This document may contain or reference informa…

22, Customer Comments If you experience any problems with this manual or just want to give us some feedback, please email us at: [email protected]. Please detail any errors you find and include your mailing address so that we can send you any manual updates. …

14, Portwell PCI-ICM422/2 Chapter 4: Address Selection The cards use four separate address spaces. COM A occupies 16 consecutive address locations and COM B, COM C, and COM D each occupy eight consecutive register locations. The two-port versions of these cards do not have ports COM C and COM D. PCI archite…

18, Chapter 6: Connector Pin Assignments A breakout cable is delivered with each card. The cable mates with a 37-pin connector on the card mounting bracket and, at the other ends of the cable, the popular 9-pin D sub-miniature male connector is used to interface with your communic…