Satec PM172E - 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.2COM.1
11
V
1513 14
69
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
R
S
-
4
8
5
P
C
(
P
L
C
)
D
E
V
I
C
E
S
Figure 2-34 COM2: RS-485 2 Wire Connection