User guide
     PlantLinc PLR5000 User’s Guide 
P/N 161-09888-001  DATA-LINC Group 
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Table 8: RS232 Pin Assignments 
Pin  Assignment 
1 Carrier Detect 
2 Transmit Data 
3 Receive Data 
4 DTR 
5 Ground 
6  Data Set Ready 
7 RTS 
8  Clear to Send 
9 N/C 
6
5
7
8
9
1234
 DB-9 Female 
Sample Data Communication Links 
The PLR5000’s versatility allows data communication links to be established using a variety of different 
configurations. This, in turn, makes it possible to extend the range of the PLR5000 and communicate around 
obstacles. 
Diagram 2 shows the most common and straightforward link, a Master communicating to a Remote in a 
dedicated link. 
Diagram 2: Point-to-Point Communication 










