Related Manuals for Omega Engineering LDP-124
Summary of Contents for Omega Engineering LDP-124
- Page 1 User's Guide http://www.omega.com e-mail: info @ omega.com LDP-124, LDP-126, LDP-144 AND LDP-146 SERIES FOR SERIAL ASCII INPUT...
- Page 2 CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
- Page 3 DESCRIPTION SECTION PAGE =========================================================================== IMPORTANT SAFETY CONSIDERATIONS UNPACKING AND INSPECTION MAIN FEATURES INSTRUMENTS DESCRIPTION FRONT DESCRIPTION, MODELS LDP-124-S & LDP-144-S FRONT DESCRIPTION, MODELS LDP-126-S & LDP-146-S REAR DESCRIPTION GENERAL SPECIFICATIONS WIRING POWER SUPPLY, RECOMMENDED WIRING PROTECTION FUSES SIGNAL INPUT CONNECTION...
-
Page 4: Important Safety Considerations 1
1.- IMPORTANT SAFETY CONSIDERATIONS SAFETY CONSIDERATIONS INSTALLATION PRESCRIPTIONS.- PRECAUTIONS.- The installation and the Before starting any operation of adjustment, replacement, future use of this unit maintenance or repair, the unit must be disconnected from any kind must be done by suit- of power supply. -
Page 5: Unpacking And Inspection 2
Model reference : S 6 = 6 digits If there are some doubts or inquiries about the present instrument, please contact OMEGA ENGINEERING´S customer service department. When the shipment arrives remove the Packing List and verify that you have received all equipment. -
Page 6: Main Features 3
Alternatively a "shift" mode can be used in which the characters are displayed according to their current position in the input shift register. Serie LDP-124-S : 4 digits type LED, seven segments, red or green colour with 57 mm (2.3") height and minus sign for polarity. -
Page 7: General Specifications
4.- INSTRUMENTS DESCRIPTION 4.1 FRONT DESCRIPTION, MODELS : LDP-124-S and LDP-144-S A : Overrange indicator. B : Minus sign. C : Decimal points. D : 4 digits, seven segments. 4.2 FRONT DESCRIPTION, SERIES : LDP-126-S and LDP-146-S A : Overrange indicator. - Page 8 Logic 1 ... . ≥ 1.6 mA = start bit 2 mA Loop Logic 0 ... . ≤ 0.2 mA = stop bit Level .
-
Page 9: Wiring 6
6.- WIRING 6.1.- POWER SUPPLY, RECOMMENDED WIRING POWER SUPPLY 115 Vac (230 Vac Optional). Power switch FUSE and spare fuse. 6.2.- PROTECTION FUSES Power Fuse The unit has a protection fuse located on the power supply Supply value socket. If this fuse must be replaced or changed because the power 230 Vac 0.2 A supply is changed, use the time-lag fuse according to IEC 127/... -
Page 10: Operating Modes
7.- OPERATING DESCRIPTION 7.1.- POWER-UP Having determined that the unit has been configured for the correct input signal, connect the mains plug to a suitable AC power source and the signal input to the signal source. Ensure that the source is an idle condition, i.e. not transmitting data, and switch on the mains power. The unit will power-up displaying its recognition address, its baud rate, the condition at the signal input, its operating mode, the parity and bits number. - Page 11 7.3.- INSTRUMENT ADDRESSING. Having received the ETX or XOFF character, start the addressing sending the STX or XON character, the next character received is the address of the unit that is to receive data. There are 32 possible addresses, from code 30 to code 4F hex. These correspond to addresses set up on the switch jumper on the card.
- Page 12 7.6.- RECOGNISED CODES - Other codes ignored ASCII Decimal Keyboard Action code code character Ctrl B STX : Starts the display listening to data. If the instrument has an address other than 0 the next character must be the address of the instrument or a 0 or it will return to not listening.
- Page 13 7.7.- TABLE OF CHARACTERS ASCII Keyboard Display ASCII Keyboard Display code code < > BLANK Page : 12...
-
Page 14: Power Selection
8.- CONFIGURATION 8.1.- POWER SELECTION See the rear label for power requirements. Power supply selection must be done by suitable qualified personnel or by the local distributor. Contact factory or your local distributor for instructions. 8.2.- INSTRUMENT CONFIGURATION To change the signal conditioning, the rear panel of the unit needs only to be removed to gain access to the internal DIP and jumpers switches located on the control board. - Page 15 8.3.- CONFIGURATION TABLES for BRIGHTNESS, BAUD RATE, OPERATING MODE, ADDRESS AND SUB-SET BS4505 BAUD RATE CONFIGURATION BRIGHTNESS CONFIGURATION Selector S4 Baud Selector S4 Brightness Switch 5 Switch 6 Switch 7 rate Code Switch 1 Switch 2 1200 2400 4800 OPERATING MODE CONFIGURATION 9600 19200 Selector S4...
- Page 16 8.4.- CONFIGURATION TABLES for BITS, PARITY AND SIGNAL INPUT BITS AND PARITY CONFIGURATION Jumpers position in Bits Parity Jumpers position in Bits Parity Selector S3 Selector S3 R S T R S T Even Even Ignored Ignored None Jumper closed = Jumper opened = SIGNAL INPUT CONFIGURATION Signal Input...
-
Page 17: Configuration Procedure 9
9.- CONFIGURATION PROCEDURE If it is necessary to change the configuration of the instrument, proceed as follows for all models, series LDP-1XX-S 1.- Check that the instrument is not powered. 2.- Remove the rear cover taking off all the screws to obtain access to the control board. (See page 6 paragraph 4.3). - Page 18 10.1.- SHIFT OPERATING MODE, PROGRAMME EXAMPLE /* =============OMEGA Engineering Inc.============== /* Demo programm for series LDP-XX-S connected to a PC /* Example of comunication in Shift operating mode using XON/XOFF Power up /* To be used under Turbo "C++" of Borland Version 1.01...
- Page 19 10.2.- STROBE OPERATING MODE, PROGRAMME EXAMPLE /* =============OMEGA Engineering Inc.============== /* Demo programm for series LDP-XX-S connected to a PC /* Example of comunication in Strobe operating mode using STX/ETX /* To be used under Turbo "C++" of Borland Version 1.01...
- Page 20 10.3.- STROBE OPERATING MODE USING XON/XOFF, PROGRAMME EXAMPLE /* =============OMEGA Engineering Inc.============== /* Demo programm for series LDP-XX-S connected to a PC /* Comunication from an IBM compatible computer in Shift operating mode using XON-STROBE-XOFF /* In Turbo "C++", Borland Version 1.01...
-
Page 21: Installation 11
11.- INSTALLATION 1.- Prepare a panel cut-out with the dimensions indicated on paragraph 12. 2.- Slide the instrument (1) into the cut-out. 3.- Slide the two fixation pieces (3) with T shape by both lateral sides of the instrument, such as it is shown on the drawing below. -
Page 22: Warranty
© Copyright 1998 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without prior written consent of OMEGA ENGINEERING, INC. - Page 23 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA...Of Course! TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors Infrared Pyrometers PRESSURE, STRAIN AND FORCE Transducers &...