User Manual

7000 Bus Converter User’s Manual (Version 1.8 Jan/2006, 7PH-006-18) --------------- 19
2.7 Basic Wire Connection for I-7520:
RS 485 wire connection.
GND ÅÆ Ext. Power GND
+VS Å Æ Ext. Power 10V-30V
Data-ÅÆ Data-
Data+ÅÆ Data+
RS 232 wire connection
Host pin2 (RXD) ÅÆ 7520_Pin2
Host pin3 (TXD) ÅÆ 7520_Pin3
Host pin5 (GND) ÅÆ 7520_Pin5
6
7
8
9
1
2
3
4
5
7
6
5
4
3
8
2
1
9
10
6
7
8
9
1
2
3
4
5
Male 9-pin D-sub
Com 1/2/3/4 or
UART port
Host Computer
GND
+VS
Date+
Date
-
7
6
5
4
3
8
2
1
9
10
GND
+VS
Data-
Data+
Init*
14
15
16
17
18
13
19
20
12
11
7520
7000
24V
GND
RS-232C
Signal
RS-485
Signal
7520R
External power
Female 9-pin D-sub