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Hardware

TankGate Interface

10 

Installation and Operations Manual

there is 230 mA of field power available. At +48VDC, there is 230 mA of field power 

available.

Figure 2-8: Selection Jumper W3

The RESET Switch is used to re-initialize the system hardware by causing it to go to a 

known starting state. This switch may be pressed at any time; however, it will do the 

following:

• 

Re initialize System Hardware

• 

Clear Scratch Memory

• 

Verify Database and Re initialize if Invalid

• 

Reset All Timers

• 

Enable Communications

Figure 2-9: Switches SW3 on the TankGate motherboard

Hard Reset

A special form of Reset is available for occasions when the battery backed-up data base 

must be re initialized. This type of reset, the Hard Reset, can be performed before a 

database is downloaded from a host PC.

The Hard Reset should be used as a last resort if the TankGate is not functioning. A 
Hard reset clears the installed database. For the Hard Reset procedure, refer to the 
Troubleshooting and Maintenance chapter.

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

VFIELD=48V

VFIELD=24V

J8

J7

W3

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

RESET

SW3