SATEC RDM172 Manual - Manual (Page 31)

Chapter 2 Installation Communications Connections
Series PM172 Powermeters 31
- 4-20mA 9 8 COM.1 :
ATTENTION
Devices
Static-Sensitive
Static-Safe
Workstations
Handle Only at
POWER SUPPLY
RS-422/RS-485
16
+RX
COM.2 COM.1
11
V
15 13 14 6 9 N
1 5
-TX +TX -RX
V
MODEM
PROFIBUS
ETHERNET
RS-232/422/485 STANDARD
3
17
12 L/+
N/- 10
ANALOG IN/OUT :
0-1mA
0-20mA
V
-+1mA LOW DC
N
(24) 18-36VDC
(48) 36-72VDC S
2 (12) 10-16VDC
+ 7
3
-
+
RS-485 COMMUNICATION PORT
2 WIRE CONNECTION
RS-485
PC
(PLC)
DEVICES
Figure 2-34 COM2: RS-485 2 Wire Connection