HF scientific Micro200BW Turbidimeter - 0 -1000 NTU User Manual
Page 55
Page 41
MICRO 200 BW 0 - 1000 NTU (5/05)
Rev. 3.1
UNITS
INTERVENING
LAST
VOLTAGE
RS232
1ST OR HUB
VOLTAGE
RS232
1
8
4
5
TXD
S
H
I
E
L
D
GRD
RXD
RXD
GRD
D
L
E
I
H
S
TXD
TXD
GRD
RXD
CPU
HOST
5
4
8
1
ADDRESS #N
ADDRESS #1
OR STAR
"BUS" OR "BACKBONE"
UNITS
INTERVENING
RS232
S
H
I
E
L
D
D
L
E
I
H
S
GRD
CPU
HOST
5
4
8
1
-
+
2
3
"IN"
+
-
"OUT"
GRD
GRD
RS232
CURRENT
CURRENT
+
+
+
-
6
7
ADDRESS #1
ADDRESS #N
7
6
CURRENT
3
2
1
8
4
5
RS232
"OUT" "IN"
+ -
-
+
+
-
-
+
"OUT" "IN"
7
6
3
1
8
4 5
2
"DAISYCHAIN"
Figure 23
RS-232 Voltage Connection
Figure 24
RS-232 Current Connection
Figure 25
RS-485 Connection
UNITS
INTERVENING
RS485
RS485
CPU
HOST
RS485
GRD
G
R
D
G
R
D
G
RD
ADDRESS #1
ADDRESS #N
1ST OF HUB
OR STAR
LAST
(SHIELD)
A
A
A
A
A
A
B
B
B
B
B
B