PRODUCT DATASHEET ET-8CNT EtherTRAKTM HIGH-SPEED COUNTERS Select the ET-8CNT when you need pulse accumulators, pulse rate, or position information over an Ethernet network. PRODUCT HIGHLIGHTS Count rates to 50 KHz with 32-bit results Measure pulses from milliseconds to a minute Direct position detection from quadrature encoders Individually isolated inputs for best noise immunity Count inputs also report as discrete inputs Support for hardware gating and software resets PERFORMANCE SPECIFICATIONS 8 counters Count mode performance: guaranteed count rate 50 KHz 32 bits Count resolution Rate (frequency) mode performance: Maximum input rate 50,000 per sec Shortest measurement period 10 mS Longest measurement period 1 min Position mode performance: Maximum position axis (2channels/axis) 4 Maximum pulses per second 25,000 Maximum quadrature states per second 100,000 Position resolution 32 bits Input performance: Guaranteed count input voltage 4 Volts Maximum count input voltage 30 Volts Guaranteed off input voltage 1.5 Volts Nominal count input current 8 mA Required supply voltage 10-30 VDC (1.4 watt typical) Operating temperature range -30 to 70° C Storage temperature range -40 to 85° C Humidity (non-condensing) 5 to 95% RS485 PORT FOR I/O EXPANSION Note: 32 Max. RS485 stations (up to 512 I/O) Baud rate: 38,400 bps Recommended distance of up to 0.5 mile Protocol: Sixnet “I/O for Windows”, Modbus ASCII & RTU Isolation (from Ethernet port) 1200 Volts RMS 1 minute A pair of counter channels can be combined to make a 32-bit up/down counter or accumulator. ORDERING INFORMATION ET-8CNT-U ET-8CNT-M 8 High-Speed Counters w/base Replacement module only All specifications are subject to change. Consult factory for latest info. Sixnet Technology Park • 331 Ushers Road • Ballston Lake, NY 12019 • USA 1.518.877.5173 • Fax 1.518.877.8346 • [email protected] SOLUTIONS FOR YOUR INDUSTRIAL NETWORKING CHALLENGES Datasheet ET-8CNT May 20, 2009 WWW.SIXNET.COM