
8303
Hardware
Varec, Inc.
11
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 Tank Gate Interface Slave at the 9600 baud, 8 data bits,
and no parity (for use with ViewRTU or FuelsManager).
Figure 2-11: COM0 J7 Terminal Block
2.2.3.2 COM1 (RS-232/RS-485) (J5)
Note COM1 is not available on the 8315 Tank Gate Interface
RS-232 is one of the two types of high-speed serial communications channels available to
interface to Host systems using several different protocols. RS-232 will operate at distances up
to 100 feet, while RS-485 allows multidrop communications at distances up to 4000 feet. RS-
232 can be used for flexibility in configuring other types of communications links. Other
variations of RS-232 communications interfaces include radio, modem and fiber optic
interfaces.
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
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
Summary of Contents for 8300 series
Page 2: ......
Page 6: ...Tank Gate Interface iv Installation and Operations Manual ...
Page 14: ...Overview Tank Gate Interface 4 Installation and Operations Manual ...
Page 50: ...Software Description Tank Gate Interface 40 Installation and Operations Manual ...
Page 52: ...Dual RS 485 MODBUS Software Blocks Tank Gate Interface 42 Installation and Operations Manual ...
Page 56: ...Tank Gate Interface 46 Installation and Operations Manual ...
Page 68: ...Tank Gate Interface 58 Installation and Operations Manual ...
Page 100: ...Tank Gate Interface 90 Installation and Operations Manual ...
Page 112: ...Tank Gate Interface 102 Installation and Operations Manual ...
Page 115: ...8303 Installation Varec Inc 105 s Figure 7 2 Tank Gate Interface Dimensions 197 204 125 ...
Page 148: ...Appendix Order Codes Tank Gate Interface 138 Installation and Operations Manual ...
Page 149: ......