User manual VAISALA DMT346

[. . . ] USER'S GUIDE Vaisala DRYCAP Dewpoint Transmitters DMT345 and DMT346 ® M210762EN-D PUBLISHED BY Vaisala Oyj P. O. Box 26 FI-00421 Helsinki Finland Phone (int. ): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2009 No part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. [. . . ] Service port is always available with fixed serial settings. 0605-039 Figure 47 Service Port Connector and User Port Terminal on the Motherboard Numbers refer to Figure 47 above: 1 2 = = Service port connector User Port Terminals User Port Connection Use suitable serial cable between the user port RxD, GND and TxD screw terminals and the PC serial port. 72 __________________________________________________________________ M210762EN-D Chapter 4 ________________________________________________________________ Operation Table 13 Parameter Bauds Parity Data bits Stop bits Flow control Default Serial Communication Settings for User Port Value 4800 Even 7 1 None ANALOG OUTPUTS USER PORT POWER RS-232 10. . . 36 V= 24 V~ + ­ RxD GND TxD Ch1+ Ch1­ Ch2+ Ch2­ 12345 6789 IOIOI 0506-033 Figure 48 Connection Example Between PC Serial Port and User Port Connections to pins 4, 6, 7 and 8 are required only if your software requires hardware handshaking. NOTE User port cannot be used when the RS-485 module is connected. Service Port Connection Connection Cables To connect to the service port, you need a suitable cable with an RJ45 connector. Depending on the connections of your PC, you can either use the Serial Connection Cable (optional accessory 19446ZZ) or the USBRJ45 Serial Connection Cable (optional accessory 219685). The USB cable enables you to connect the transmitter to a PC via a standard type A USB port. Note that the USB cable does not enable high speed data transfer, since the bit rate is limited by the serial interface of the service port. VAISALA _______________________________________________________________________ 73 USER'S GUIDE____________________________________________________________________ Installing the Driver for the USB Cable Before taking the USB cable into use, you must install the provided USB driver on your PC. When installing the driver, you must acknowledge any security prompts that may appear. The driver is compatible with Windows® 2000, Windows® XP, Windows Server® 2003, and Windows® Vista. Check that the USB cable is not connected. Disconnect the cable if you have already connected it. Insert the media that came with the cable, or download the driver from www. vaisala. com. Execute the USB driver installation program (setup. exe), and accept the installation defaults. The installation of the driver may take several minutes. After the driver has been installed, connect the USB cable to a USB port on your PC. Windows will detect the new device, and use the driver automatically. The installation has reserved a COM port for the cable. Verify the port number, and the status of the cable, using the Vaisala USB Instrument Finder program that has been installed in the Windows Start menu. Windows will recognize each individual cable as a different device, and reserve a new COM port. Remember to use the correct port in the settings of your terminal program. If you are using the Vaisala MI70 Link application, you do not need to check the COM port, as the MI70 Link detects the USB connection automatically. There is no reason to uninstall the driver for normal use. However, if you wish to remove the driver files and all Vaisala USB cable devices, you can do so by uninstalling the entry for Vaisala USB Instrument Driver from the Add or Remove Programs (Programs and Features in Windows Vista) in the Windows Control Panel. Using the Service Port 1. Unfasten the screws on the transmitter cover, and open the transmitter. Connect the desired cable (serial interface cable or USB cable) to your PC and the service port connector on the transmitter. [. . . ] +140 ºF) max 30 mA max 30 mA max 60 mA RL< 500 ohms 540 ohms RL> 2000 ohms RL> 10 000 ohms -55 . . . +176 ºF) 1. 5 mm2 (AWG16) Relay Module Operating temperature range Operating pressure range Power consumption @24 V Contacts SPDT (change over), for example, Contact arrangement Form C Imax Imax Safety standard for the relay component Storage temperature range 3-pole screw terminal / relay Max wire size -40 . . . 1300 mmHg max 30 mA 0. 5 A 250 VAC 0. 5 A 30 VDC IEC60950 UL1950 -55 . . . +176 ºF) 2. 5 mm2 (AWG14) 146 _________________________________________________________________ M210762EN-D Chapter 7 ____________________________________________________________ Technical Data RS-485 Module Operating temperature range Operating modes Operating speed max Bus isolation Power consumption @ 24V External loads standard loads Storage temperature range Max wire size -40 . . . [. . . ]