Pneumercator 900931-1-4 Isolated Quad Modbus RTU Interface Card is used on the TMS3000 Automatic Tank Gauge. The ModBus RTU Interface Cards are plug-in connectivity products that offer an easy, cost-effective solution providing access to all TMS real-time tank management data from practically any building management system or programmable logic controller supporting the industry-standard ModBus RTU serial communications protocol. Communications are over a half-duplex, single twisted-pair RS-485 cable up to 4000 feet in length, with a switch-selectable line termination resistor for multi-drop configurations. Installation and setup are quick and easy, requiring no programming on the TMS/LC2000 console. Available in single, dual, and quad-channel configurations, isolated or nonisolated.

Features

• Communications Protocol: Modbus RTU
• Communications Format: RS-485, Half-Duplex
• Connection Type: Plug-In Terminal Block with Wire
• Input: Ch. A (+), Ch. B (-), Shield, Output: Ch. A (+), Ch. B (-), Shield
• Recommended RS-485 Cable: Belden 9841 (PVC Jacket), 89841 (FEP Teflon Jacket) or similar
• Maximum Cable Length: 4000 Feet (1200 Meters) total to end of run
• LED Indicators: TX (Slave Transmit), RX (Global Receive)
• Serial Data Format: Fixed, 1 Start Bit, N-8-1
• Baud Rate: 9600 or 38400, Dip Switch Selectable
• Slave Address Select: 1 thru 64, Dip Switch Selectable
• Maximum Slave Response Time: 400 ms
• Maximum Number of 16-Bit Registers per READ Command: 64
• Maximum Register Update Rate from TMS: 1.2 seconds (0.8 seconds typ.)