User manual VAISALA PTU300

[. . . ] USER'S GUIDE Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300 M210796EN-E 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. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of Sale. ________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Follow the steps below to connect your transmitter to the MI70 Link program using the serial interface: Connect your PC to the transmitter. There is usually no need to select a COM port manually, the MI70 Link software can detect it automatically. The MI70 Link program, and the optional connection cables, are available from Vaisala. See list of accessories in section Options and Accessories on page 164. 1. Serial Line Communication Connect the serial interface by using either the user port or the service port. You can change the serial settings and operate in RUN, STOP, POLL and SEND modes. Service port is always available with fixed serial settings. VAISALA _______________________________________________________________________ 73 USER'S GUIDE____________________________________________________________________ 0605-039 Figure 48 Service Port Connector and User Port Terminal on Mother Board Numbers refer to Figure 48 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, see Figure 49. Table 15 Default Serial Communication Settings for the User Port Value 4800 Even 7 1 None Parameter Bits per second Parity Data bits Stop bits Flow control 74 __________________________________________________________________ M210796EN-E Chapter 4 ________________________________________________________________ Operation 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 49 Connection Example Between PC Serial Port and User Port Connections to pins 4, 6, 7 and 8 on PC serial port are required only if you are using software requiring hardware handshaking. After power-up the transmitter (in STOP-mode) outputs the software version and the command prompt. PTU300 / 3. 01 > In RUN mode a measurement output starts immediately after power-up. 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 _______________________________________________________________________ 75 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. 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. After the driver has been installed, connect the USB cable to a USB port on your PC. 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. 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. [. . . ] 20 mA External loads current outputs Max load + cable loop resistance 0. . . . 1 V 0. . . 5 V and 0. . . 10 V Storage temperature range 3-pole screw terminal Max wire size 0 . . . +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) 162 _________________________________________________________________ M210796EN-E Chapter 7 ____________________________________________________________ Technical data 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 . . . [. . . ]