The mobile hand-held terminal MHT-G2 supplements the Identification Systems CIS. It makes it possible to read from and write to data carriers independent of location. The basic unit is based on the hand-held computer PSION WORKABOUT PRO with the operating system Windows® Embedded CE. The device is powered using a rechargeable lithium-ion battery. The battery in the basic unit is charged using a docking station. The docking station can also be used for data transfer between the basic unit and a PC via a USB port. An SD memory card is inserted in the basic unit, which contains the software Transponder Coding CE (TCCE) for writing (programming) and reading the data carriers. A read/write head to suit the data carrier is fitted to the basic unit. To achieve even more flexibility in use, the read/write head can be connected to the hand-held terminal via an optionally available coiled cable. The robust, splash-proof design (IP54) guarantees correct function even in difficult conditions in a harsh, industrial environment.

The following components are necessary for the operation of a mobile hand-held terminal:

• Basic unit
• Rechargeable battery
• Docking station
• SD memory card with Transponder Coding CE (TCCE)
• CIS3, CIS3A or CIS3A-Mini read/write head
• Coiled extension cable (optional)

The data can then be read by the control system. The four data wires, which are connected directly to I/O on the PLC, represent the related hex digit using high/low states (24 V). At any one time a value between decimal 0 and 15 can be represented on these cables. The first digit from the data carrier is indicated immediately on the 4-bit data wire. Using skip clock signals from the control system a maximum of 32 hex digits (16 bytes) can be read with the CIS3/CIS3A and 8 hex digits (4 bytes) with the CIS3A-Mini.

In typical applications 2, 3 or 4 digits of these 8 or 32 possible digits are used and combined to form a number. Hereby, e. g. 150 product carriers (3 digits) with 001, 002, 003 to 150 are sequentially numbered in decimal notation. The data carrier then has a data record address that is used to store the actual production information in the control system.

The data carrier can be written (programmed) for read-only operation on customer request and also visibly labelled using a laser. In this case a data carrier programming and labelling information form is to be completed with the order. This form is available for download from www.euchner.de.

You will have significantly more flexibility if you have your own facility for data carrier programming. A read/write head with a serial interface can be used on a PC for easy writing to the data carriers (programming). For this purpose the programming software Transponder Coding (TC) is installed on the PC. TC is an ASCII/hex editor with which it is easy to write to and read from the data carrier on the PC. It is also possible to write to and read from data carriers with the aid of the portable mobile hand-held terminal MHT-G2. For this purpose a read/write head to suit the Identification System is fitted. The data carriers can be read and written (programmed) using the software Transponder Coding CE (TCCE). TCCE is an ASCII/hex editor with which it is easy to write to and read from the data carrier on the MHT.

In the case of read/write stations with serial interface, the data communication is according to the 3964R transfer protocol. The individual commands, e. g. for reading the data or writing the data, are described in the device-specific manuals.

Interfacing of a read/write station with serial interface to the user's PC application is supported by the optionally available ActiveX®1) modules (can be used if Microsoft Windows®1)-based user programs support ActiveX®1)). CIS can thus be used in conjunction with PC-based control software or visualization software. The ActiveX®1) module is used here as a protocol driver for the 3964R transfer protocol. You can obtain further information on the usage of an ActiveX®1) module on request.

1) Microsoft Windows® and ActiveX® are registered trademarks of Microsoft Corporation