DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP
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level developments DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP Features • Precision closed loop inertial sensor with optical position feedback and fluid damping • Single axis measurement range ±5° to ±45° • High resolution measurement <0.0002° • High accuracy over full measurement range (<0.003°) • Low temperature drift (<0.005° over 0-40°C) • ModBus TCP/IP Ethernet interface. • Supports assignable fixed IP, or DHCP • Fully isolated power supplies, 19-30V dc input • Rigid machined Anodised Aluminium housing (IP67) • Two IP67 M8 connectors for network and power The DCL inclinometer utilises a precision closed loop inertial inclinometer sensor to give extremely accurate and high resolution angle measurement. It has fully isolated power supplies, with a ModBus over TCP/IP Ethernet interface. The anodised Aluminium housing is sealed to IP67 making it suitable for use in the most demanding environments. A pair of industry standard IP67 sealed M8 connectors connect the network and power supply separately. Communication is via a ModBus TCP/IP protocol on a 10Mbit Ethernet physical layer. They are temperature compensated over the specified range to meet the needs of the specific application. The sensing element is the latest generation closed loop sensors with liquid damping and optical position feedback. This enables very high accuracy measurement with very low temperature drift, excellent long term stability, and excellent performance in applications with high vibration. These devices are manufactured and calibrated in our UK factory to guarantee performance to the stated specification. General Specifications Parameter Level Developments Ltd. Croydon, Surrey, CR0 2DN t : +44 (0)20 8684 1400 sales@leveldevelopments.com 97-99 Gloucester Road United Kingdom f : +44 (0)20 8684 1422 www.leveldevelopments.com

level developments DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP

There are two M8 connection sockets on the inclinometer sensor. The power cable is 3 pin, the Ethernet network connector is 4 pin. The mating connector details are shown below. All mating connectors, cables and accessories are available from us on request. Ethernet Connections Power Connections Binder M8 Straight Connector Binder M8 Moulded 2m PUR Cable Binder M8 Moulded 5m PUR Cable 05 - ±5° Full Scale Measurement Range 20 - ±25° Full Scale Measurement Range 45 - ±45° Full Scale Measurement Range 232 - RS232 Interface with LD communication protocol TCP - ModBus over TCP/IP communication...

DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP Housing Drawing Axis Direction and Mounting Orientation Mounted on Horizontal Surface Level Developments Ltd. 97-99 Gloucester Road Page 4 of 8 Croydon, Surrey, CR0 2DN United Kingdom

Data is transmitted and received over a 10baseT Ethernet interface using the ModBus TCP/IP protocol. The following section provides some basic information about the communication between the host PC or PLC and the SMCL. The full ModBus on TCP/IP specification can be obtained from: http://www.modbus.org/docs/Modbus_Messaging_Implementation_Guide_V1_0b.pdf The device (the inclinometer) acts as a server. The PC or PLC acts as the client. The client needs to open a valid TCP/IP socket with the device before communication can take place. The default IP address of the devices at the time of...

level developments DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP Level Developments Ltd. Croydon, Surrey, CR0 2DN t : +44 (0)20 8684 1400 sales@leveldevelopments.com 97-99 Gloucester Road United Kingdom f : +44 (0)20 8684 1422 www.leveldevelopments.com

DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP Examples of Reading Angle Example 1: Read the angle Command function code | starting reg. to read (0x0000) | | number of reg. to read (0x0002) | | | 03 00 00 00 02 Response (positive angle) function code | byte count | | angle (0x0000705d = 28765 decimal (2.8765 degrees) | | | 03 04 00 00 70 5d Response (negative angle) function code | byte count | | angle (0xffffa54d = -23219 decimal (-2.3219 degrees) | | | 03 04 ff ff a5 4d Level Developments Ltd. 97-99 Gloucester Road Page 7 of 8 Croydon, Surrey, CR0 2DN United Kingdom

DCL : Single Axis Precision Inclinometer, ModBus Over TCP/IP Configuration Application The device ships with a small Windows based application for displaying and logging the inclinometer data, and for network configuration. Using this application it is possible to read data from the device, log it to a csv file, change the static IP address, switch to DHCP mode, and change the filter coefficients and the zero offset values. The device is shipped by default with the static IP address of 192.168.16.130. It should only be connected to a network where this address is free or reserved. After...