AccuEnergy Acuvim II series - Page 194

186
Fig 5-54
Connection of many DP stations
The bus terminal is composed of three resistors and connection wire, where Vp
is the supply positive voltage and DGND is the Digital Ground. When the bus is
idle, the bus terminal makes the data P level higher than data N, so the bus’s idle
signal is always 1.
P
N
P
N
STATION 1 STATION 2
Vp Vp
DGND
DGND
390
220
390
390
220
390
PN
PN
STATION 3STATION 4