1
1 Introduction
1.1
About This Manual
This manual explains how to install, configure, and operate the TDD2. It is divided into the
following sections:
Installation
Section 2 explains how to install the TDD2.
Operation
Section 3 describes how the TDD2 operates.
Configuration
Section 4 explains the settings affecting the operation of the TDD2.
Section 5 shows the front panel menu representation of the configuration items
listed in section 4.
Troubleshooting
Section 6 is a troubleshooting guide.
Communications
Section 7 covers communicating with the TDD2 via the RS-232/485 interface
1.2
Introducing the TDD2
The TDD2 is a flexible transducer display capable of interfacing with magnetostrictive transducers
employing Synchronous Serial Interface (SSI), Start/Stop, Pulse Width Modulated (PWM), or CANbus
output. A high-speed microcontroller interrogates the sensor, performs calculations to arrive at the desired
engineering units, and displays the position on the 6-digit LED display. A non-volatile EEPROM stores
configuration data while the TDD2 is powered off.
The front panel of the TDD2 contains 4 keypad switches to facilitate configuration using the front
panel display. These switches can also be used to control display operation when not configuring the device.
An RS-232/485 interface allows for setup and control from a host computer or PLC. Free software
is available to assist with configuration from a Windows PC.
Solid State or relay type digital output modules can be installed in the TDD2 to implement limit
switch type functions.
TDD2-ND models do not have a front-panel display or keypad and must be configured using the RS-
232 interface.