4 wiring converter to pc, Converter to powermeter, Converter to modem – SATEC RSC232 User Manual
Page 8
6
3.4 Wiring
Converter to PC
LINE
NEUTRAL
RS-232 CABLE
PROTECTIVE
GROUND
C
O
N
V
E
R
T
E
R
1
2
3
4
5
5
5
4
3
2
1
6
7
8
9
9
8
7
6
EGND
DB9
female
DB9
male
Converter to Powermeter
SGND
RS-422:
4 wires to
communication line
RS-485:
2 wires to
communication line
Converter to Powermeter
-Rx
-Tx
+ Rx
+Tx
SHIELD
-Tx, -Rx
(negative)
+Tx, +Rx
(positive)
SGND
Converter to Modem
5
4
3
2
1
5
4
3
2
1
9
8
7
6
9
8
7
6
MODEM
MODEM
RS-232 CABLE
RS-232 CABLE
DB9 male
DB25 male
DB9
male
DB9
male
C
O
N
V
E
R
T
E
R
C
O
N
V
E
R
T
E
R
1
2
3
4
5
1
1
4
2
1
5
3
1
6
4
1
7
5
1
8
6
7
8
9
6
1
9
1
0
2
3
11
2
4
1
2
2
5
1
3
7
2
0
8
2
1
9
2
2