Liebert OpenComms Installation & User Manual page 31

Modbus RTU Master
EIA-485 9600,N,8,1
Maximum of 32 devices
with a total cable length of
4000feet.
Figure 9. Typical Maximum Installation
The recommended cable characteristics are:
•
(non- shielded)
•
(shielded)
30
Normal Environments:
18-22 gauge, twisted-pair, stranded
Typical type is: Belden 8442
Noisy Environments:
18-22 gauge, twisted-pair, stranded
Typical type is: Belden 9461
NIC Setup and Testing