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