T7
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T7 Networked Absolute Inclinometer Page 1 of 9 The T7 is now IP68 rated. For more details, download the T7_IP_Certification. The T7 is a solid state absolute inclinometer that senses tilt angles over a full 360 ° range in a single axis. The T7 incorporates a number of breakthroughs to create a new type of inclinometer that is rugged, compact, fast, flexible and easy to use. The T7 is available in several interface and protocol options. The physical interface can be RS232 or RS485 . The protocol can be either US Digital's serial protocol or Modbus RTU. The RS232 version supports a single T7 with up to 100 ft of cable. For users that need longer cable lengths or multiple T7s on a single bus, the RS485 version supports up to 32 T7s on the bus. Power for each T7 is supplied over the network cable. The Modbus RTU version is suitable for users that require an industry standard, open protocol. The host may access each T7 on the bus using standard Modbus read/write register function codes. The T7 calculates tilt angle (inclination) by sensing the acceleration from solid state accelerometers integrated into a monolithic chip. Gravity, centrifugal forces and linear speed changes are all forms of acceleration. The T7 will report the mathematically calculated tilt angle based on all sensed acceleration(s). The serial port interface provides an efficient way to read and write data to a network of T7s. All configurations and parameters are stored in nonvolatile memory. A Windows demo application is provided for displaying the angles and temperature as well as setting operating modes, orientation, zero position, damping / averaging time, direction, and more for every T7 on the network. In addition, a Windows DLL gives the user a set of simple functions to read and write data to a network of T7s. ► Full 360 degree operation » A+ 0.1 degree accuracy ► IP68 rated ► RS232 or RS485 interface ► MODBUS RTU version available ► RS485 version supports 32 devices on the bus ► 5.5V to 30V power supply range Typical applications include heavy construction equipment, dredging machinery, mining equipment, solar tracking and warehouse automation. Software ► www.usdigital.com/support/software/t7-software ► www.usdigital.com/assets/USDProducts.zip (.zip file with installer) Mechanical Drawing USE= 1400 NE 136th Avenue info@usdigital.com Local: 360.260.2468 DIGITAL Vancouver, Washington 98684, USA www.usdigital.com Toll-free: 800.736.0194

T7 Networked Absolute Inclinometer Page 2 of 9 RoHS COMPLIANT & EnvironmentalParameter Operating Temperature Acceleration Limit (for internal sensor) Ingress Protection Rating Electrostatic Discharge, IEC-61000-4-2 0 ElectricalParameter Min. Typ. Max. Units Supply Voltage 5.5 24 30 V Supply Current (Operating, 22C ambient) @ 5.5V 50 mA DIGITAL Vancouver, Washington 98684, USA www.usdigital.com Toll-free: 800.736.0194

Networked Absolute Inclinometer Page 3 of 9 © Mechanical Parameter Case Material Weight Specification Glass filled polycarbonate 1.2 oz (34 g) nom. 0 RS232 VersionsParameter Number of T7s on bus Maximum total cable length Note: The T7 can drive 100 ft. of cable. Some PC's have limited drive on the RS232 bus which will limit the maximum cable length to less than 100 ft. 0 RS485 Versions Parameter Max. Units Maximum total cable length 1000 feet 1) Uses RS485 two wire network 2) Uses "fail-safe" drivers so bias resistors are not required 3) In most applications, the RS485 network...

T7 Networked Absolute InclinometerPage 4 of 9 Recommended minimum power supply voltage for T7s equally spaced on a total cable length, L. Stub length from T-adapter t o a T7 is 6 feet. N is the number of T7's in the network. Number of T7's Nominal supply current Recommended minimum power supply voltage for T7s spaced 9 feet apart after an initial leader cable length, L. Stub length f rom T-adapter to a T7 is 6 feet. Number of T7's Nominal supply current DIGITAL Vancouver, Washington 98684, USA www.usdigital.com Toll-free: 800.736.0194

T7 Networked Absolute Inclinometer Page 5 of 9 32 1.3A 18 24 26 30 - - - - -iQ,- Modbus Version The RS232 and RS485 versions of the T7 are available with the Modbus RTU protocol. Modbus Function Codes 3 (Read Holding Register) and 6 (Write Single Register) are supported. User defined Function Code 110 is used for some operations such as setting serial port parameters and the device address. If non-US Digital Modbus devices are connected to the same bus, it is recommended that only Function Codes 3 and 6 be used for non-USD devices. Test Conditions Axis 2...

T7 Networked Absolute InclinometerPage 6 of 9 95% confidence interval (± 2?), degrees .006 Damping Time, milliseconds Standard Deviation (?)of Angle Noise, degrees 5000 .003 * Measurements taken at 25 ° C ► Damping time is a user programmable parameter 0 Axis Orientation Axis Orientation: Note: T7 shown with factory default configuration. 0 Noise Filtering The T7 uses a FIR (Finite Impulse Response) digital filter to provide electronic damping of the angle readings. The digital filter's impulse response has a triangular weighting that decays linearly to zero. The damping time is user...

Networked Absolute Inclinometer Page 7 of 9 increase the response time. An inclinometer network assembled with the RS232 or RS485 version of the T7 is shown below. US Digital sells all the cables and connectors needed to wire a T7 network. The T7 uses the same connector for all interface versions. Regardless of the interface option, a host PC, PLC or microcontroller communicates with a network ofT7s by sending/receiving simple serial port commands over the RS232 or RS485 bus. Network Address T7-1-232, T7-1-485 Addressing Each T7 on the network must be assigned a unique address from 1 to 100...

T7 Networked Absolute Inclinometer Page 8 of 9 Description Shield Vin GND TXD / BUS+ RXD / BUS- 0 Default Configuration All T7 units ship from US Digital with a default configuration. Configuration parameters are stored in non-volatile flash memory and can be easily changed by the user. The specifications are shown below. However, in larger quantities, units can be preconfigured with any of t he available settings noted in the T7 Communication User Guideor T7 Modbus Communication User Guide. Please contact c ustomer service. Default Configuration: ► Address = 127 ► Single-axis version uses...