11
8300 Hardware
2.2.3 Communications

The Communications installation requires connection of the appropriate communication

cable to one of two connectors. The available options include RS-232 and RS-485

communications.

• COM0 (RS-232) (J7)

• COM1 (RS-232 or RS-485) (J5)

• COM1 Transmit Control (RS-232) (J6)

• COM1 Hardware Handshaking Switch (SW1)

• COM1 RS-232/RS-485 Selection Switch (SW2)

• COM1 RS-485 Terminating Resistor Jumper (W2)

Figure 2-10:Com1 J5 Terminal Block

2.2.3.1 COM0 (J7)

COM0 is an RS-232 port for use in diagnostic testing/local programming or

communications to a host system. The

protocol defaults to TankGate Slave at the 9600 baud, 8 data bits, and no parity (for use

with ViewRTU or FuelsManager).

Figure 2-11:Com 0 J7 Terminal Block

EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWARE HANDSHAKING
AB
A/TXDB/RXDGNDRTSCTSTXDRXDGND+15V+5V+-VFIELD COM1 COM 0 AUX POWD=48VD=24VJ7
J5J6
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWARE HANDSHAKING
AB
CTSTXDRXD
GND
+15V+5V
GND
-15VCOM 0 AUX POWER
J8
J7