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8300 Installation
RS-485 Communications
• To install the RS-485 communications option, connect a single twisted wire
pair to J5 (COM1).
Note! When using COM1, Switch SW2 must be set for RS-485 mode.
Power-Up
Before the field cables are attached, perform an initial system verification.
Initial system verification
• Connect the power cable to power connector P1, then connect an RS-232 cable
from a PC with ViewRTU to J7 (COM0).
• Power up the unit.
The CPU LED on the tank gauge interface module should toggle on and off. If the CPU
indicator is not flashing, turn off system power and proceed with the Troubleshooting
and Calibration chapter.
Establishing Host Communications
When the main system power is turned on, the Host communications status is set to On-
line by default. The TankGate then waits for a valid poll from the Host computer. If the
communication cable is installed and the Host is running, a communications link is
established. Verify this condition with a hand-held terminal or ViewRTU.
Verifying Host Communications
• Display the COM Point and verify that an On-line condition is indicated.