8200-M698-O1 Rev B 225 Installation and Technical
17
INSTALLATION, CONT.
I/O Ports Interconnections
Interconnect Wiring for COM0/COM1 20mA Current Loop Operation
Peripheral Device has ACTIVE END of Current Loop.
SERIAL I/O TxD1 (COM0/COM1)
P20
Interconnect Wiring for COM0/COM1 20mA Current Loop Operation
Peripheral Device has PASSIVE END of Current Loop.
SERIAL I/O TxD1 (COM0/COM1)
P20
1
2
3
4
5
6
7
8
9
10
TxD0-RS232
GND
TxD1-SRC
TxD1-20mA +
TxD1-20mA –
RxD1-RS232
TxD1-RS232
GND
RxD0-RS232
TxD0-20mA Active
Rx SOURCE
Rx RETURN
+V
225
Internal
Circuitry
Rx RETURN
Rx ACTIVE
225
Internal
Circuitry
Peripheral
Device
Peripheral
Device
+5
1
2
3
4
5
6
7
8
9
10
TxD0-RS232
GND
TxD1-SRC
TxD1-20mA +
TxD1-20mA –
RxD1-RS232
TxD1-RS232
GND
RxD0-RS232
TxD0-20mA Active
VCC