Cognex DataMan 200 - Multi-Port Connections

2
3
5
532 532 532
DataMan 200
2: Tx Data
3: Rx Data
5: GND
2: Rx Data
3: Tx Data
5: GND
PC
DataMan 200 DataMan 200
34 DataMan 200 Quick Reference Guide DataMan 200 Quick Reference Guide 35
You can connect multiple DataMan 200 readers to a single PC (or other device
equipped with a serial port) using a multi-port connection.
A multi-port connection creates a daisy-chain of readers. Each reader receives
serial data from the previous reader and transmits it to the next reader. When
a reader transmits data, it is passed through each of the readers in the chain
between it and the PC.
Because of the large number of possible congurations, Cognex does not
supply cabling for multi-port DataMan 200 connections. Instead, you must
construct your own cable that meets the requirements of your system
conguration.
The cable must provide a DB-9 connector for each DataMan 200 serial cable
and a DB-9 connector for the PC serial port. Each DB-9 connector must
Multi-Port Connections
provide Tx Data, Rx Data, and ground. The Tx Data and Rx Data pins
on adjacent connectors must be connected to provide the multi-port
connection.
The following diagram shows how to create a multi-port cable for a
3-reader system: