Varec TankGate Interface 8315 Series, Installation & Operation Manual, Page: 12 / 120

Overview TankGate Interface
2 Installation and Operations Manual
1.4 Specifications
1.4.1 System Design
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16-bit processor with optional intelligent communication modules
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Intelligent field device communications
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128K bytes Non-Volatile Database Memory
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Serial RS-232 or RS-485
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Visual indication - 4 LEDs on main board indicate power and status
1.4.2 Software Functionality
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Tank gauge scanning - Data acquisition of measured values from connected
tank gauges/transmitters
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Service & diagnostics*
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Gauge diagnostics
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Read level, temperature and status data from gauge/transmitter
1.4.3 Host Communication
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Host comm. ports - 1
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Comm. type - Com #0: RS-232C
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Baud Rate 9600 baud
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Protocol - Modbus™ RTU protocol
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Mode - RTU mode, master and slave
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Media access - Master/Slave
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RS-232 or RS-485 communications
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RS-485 Maximum Cable Length (24 AWG), 4000 Feet
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RS-485 Maximum Multi-dropped Units, 32
1.4.4 Modbus Functionality
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Modbus™ commands - 3, 4, 5, 6, 15, 16
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Modbus™ mapping - Configurable
1.4.5 Power Supply
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Supply 100...240 Vac, 50/60 Hz
1.4.6 Power consumption
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50 VA max (500 mA)
1.4.7 Surge protection
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Gas Discharge Tubes (GDTs) and clamping diodes on all field inputs, power
supply inputs and communications channels
1.4.8 Operating temperature
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-40...+185 °F (-40...+85 °C)