Varec TankGate Interface 8315 Series - Manual (Page 21)

8315 TGI 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