User Manual

Page 41
MICRO 200 BW 0 - 1000 NTU (5/05)
Rev. 3.1
UNITS
INTERVENING
LAST
VOLTAGE
RS232
1ST OR HUB
VOLTAGE
RS232
1845
TXD
S
H
I
E
L
D
GRD RXDRXDGRD
D
L
E
I
H
S
TXD
TXD
GRD
RXD
CPU
HOST
5481
ADDRESS #NADDRESS #1
OR STAR
"BUS" OR "BACKBONE"
UNITS
INTERVENING
RS232
S
H
I
E
L
D
D
L
E
I
H
S
GRD
CPU
HOST
5481
-
+
23
"IN"
+
-
"OUT"
GRD
GRD
RS232
CURRENT CURRENT
++
+
-
6
7
ADDRESS #1 ADDRESS #N
7
6
CURRENT
32
1845
RS232
"OUT" "IN"
+ - - + +--+
"OUT" "IN"
7
6
318452
"DAISYCHAIN"
Figure 23
RS-232 Voltage Connection
Figure 24
RS-232 Current Connection
Figure 25
RS-485 Connection
UNITS
INTERVENING
RS485RS485
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