Specifications

8200-M538-O1 Rev C y 225 Installation & Technical
17
Rx RETURN
R
x
ACTIVE
Tx RETURN
T
x
ACTIVE
Rx RETURN
R
x
ACTIVE
INSTALLATION, CONT.
Interconnect Wiring for COM2 20mA Current Loop Operation
Peripheral Device has ACTIVE END of Current Loop.
SERIAL I/O TxD2 (COM2)
P18
Interconnect Wiring for COM2 & COM3 20mA Current Loop Operation
Peripheral Device has PASSIVE END of Current Loop.
SERIAL I/O TxD2 (COM2 & COM3)
P18
1
2
3
4
5
6
7
8
9
10
11
12
13
TxD2-SRC
TxD2-20mA +
TxD2-20mA –
RxD2-SRC
RxD2-20mA +
RxD2-20mA –
RxD2-RS232
TxD2-RS232
GND2
RxD3-RS232
TxD3-RS232
TxD3-20mA ACTIVE
GND3
+V +V
225
Internal
Circuitry
Tx SOURCE
T
x
RETURN
Rx SOURCE
R
x
RETURN
1
2
3
4
5
6
7
8
9
10
11
12
13
TxD2-SRC
TxD2-20mA +
TxD2-20mA –
RxD2-SRC
RxD2-20mA +
RxD2-20mA –
RxD2-RS232
TxD2-RS232
GND2
RxD3-RS232
TxD3-RS232
TxD3-20mA ACTIVE
GND3
225
Internal
Circuitry
Peripheral
Device
Peripheral
Device
+5
+5
+5
+5
IMPORTANT!
A jumper MUST be installed
between P18 terminals 4 & 7
to enable 20mA Current Loop
Operation on COM2!