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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
A
B
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
+
-
VFIELD
COM1
COM 0 AUX POW
D=48V
D=24V
J7
J5
J6
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
A
B
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
COM 0 AUX POWER
J8
J7