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MK1000 MicroKiosk Product Reference Guide
Figure 2-2. RS-485 Two-Wire Serial Network
1 2 3 4
RS-232
GWG
1/2 W
100Ω
100Ω
Rt
GW
1/2 W
1/2 W
100Ω
100Ω
4000 Ft. Maximum
Termination Resistors at Both Ends
RS-232/RS-485
Conversion Box
Rt
1 2 3 4
1 2 3 4
GWG
GWG
100Ω
100Ω 100Ω
100Ω
1/2 W
GWG Green wire ground or power
system ground
Circuit ground or circuit
common
Rt 120
Ω
1/2W
Recommended RS-485 Two-Wire Multidrop NetWork