E-Mon E-PS-S-HV-RTU - Manual (Page 27)

Chapter 3 Communication 21
F i g u r e 2 6 : M O D E M m o d u l e
R S - 4 8 5 / 2 3 2 C o m m u n i c a t i o n p o r t ( C O M 4 – E T H o r M O D E M
o p t i o n a l m o d u l e s )
The RS-485/232 Communication port – COM4 is provided by ETH optional module.
Each module with Communication port – COM4, provides two
indication GREEN LEDS:
"RX" GREEN LED, blinking led shows receiving data at COM4
"TX" GREEN LED, blinking led shows sending data at COM4
R S - 4 8 5 m o d e
In the RS-485 mode, the 485/232 wire must be left opened as shown in figure 27
F i g u r e 2 7 : S e r i a l C o m m u n i c a t i o n N e t w o r k C o n n e c t i o n – R S - 4 8 5 C O M 4