Satec BFM 136 - Communications

Chapter 2 Installation Communications
Branch Feeder Monitor 136_Installation Operation and Manual 16
2.3 Communications
Several communication options are available for the BFM136.
Figure 2-8 Communication Options
RS-485 Connection
Figure 2-9 RS-485 2-wire connection
Figure 2-10 RS-485 multidrop connection
RS485
RF
RS485
DIAL-UP
MODEM
TELEPHON
RS485
RS232
RS485
NONE
RS485
ETHERNET
RS485
RS485/422
+
Rx
Tx
2
BFM136 BFM136
BFM136
R
t
1
MASTER
RS-232
RXD TXD TX ENABLE RXD
RS-422 / RS-485
TXD
POWER
UP TO 32 POWERMETERS
CABLE MAXIMUM LENGTH 1000M
RS485RS232
RS485/422-232
+
SHLD
-
CONVERTER
SHLD
SHLD SHLD
R
t
SUPPLY
COMMUNICATION CONVERTER
N
L
POWER
-
+
-
+
-
+
t
1,R
t
R 2=200-500 Ohm, 0.5W
+ + +