Installation/Cabling
Installation/Cabling
5
For a continually updated list of recommended RS-485
interface cards, contact CAL.
Feature
Type of transmission lines Unbalanced
132
321
15M
19.2Kb/sec 19.2Kb/sec
+/- 25V + 12 to - 7V
1200M
Differential
Maximum number of drivers
Maximum number of receivers
Maximum cable length
Maximum data rate
Maximum CMV
RS232 RS485
Table lists the features of both RS-232 and RS-485
standards.
Cable To ensure data integrity over long transmission
distances, it is recommended that good quality RS-485 cable
is used.
Recommended: RS485: Belden 9841, RS232: Belden 9501
available from most leading distributors, and stocked by
CAL.
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