Laurel-electronics LAUREATE SERIES Serial Comunications Manual de usuario Pagina 1

THE LAUREATE SERIESSerial Comunications ManualLAUREL Electronics Inc.3183-G Airway Ave, Costa Mesa, CA USA 92626Tel: (714) 434-6131 Fax: (714) 434-3

The measurement data format with both of these parameters set consists of 10 characters:+999.99A<cr><lf> * *

4.0 SYSTEM CONFIGURATIONSThe meters operate in a Point-to-point mode using RS-232 or RS-485. In addition, they canoperate in a Multi-point mode using

Counter onlyThe transmission rate of measurement data can be selected in “Ser 1". Data transmission isinitiated at the end of the calculation ti

At the end of the complete transmission, the latched RTS value is reset false, even though the RTSline may be high at that instant. The RTS latch do

CHAR #1234CHARACTER*0-VA-Z0-UDESCRIPTIONCommand Identifier (Recognition Character)Device Address (0 addresses all devices, 1-Vspecific)Command Functio

-14-COMMUNICATIONS MODEContinuous mode*1A0Command mode *1A1. REQUEST DPM/SCALE VALUE REQUEST COUNTER VALUESLatest reading *1B1 * All active items*1

CHARACTER 4Code for number of bytes or wordsCode # Code # Code # Code #1 = 1 9 = 9 H = 17 P = 252 = 2 A = 10 I = 18 Q = 263 = 3 B = 11 J

aa is the most significant address in nonvolatile memory of the wordsto be read or written<data> is n words of 2 bytes or 4 hex characters per w

S = Sign of value, space (or +) for positive, - for neg value D = Digit from 0 to 9 . = Decimal point placement and must always be included A = Alarm

Command Identifier “*”, the address #, and the Command letter “H”. This is thesame format that data is transmitted from a DPM in the Continuous mode

CONTENTS1.0 HARDWARE AND SOFTWARE SETUP...21.1 SELECTING THE MODULAR CABLE TYP

transmits up to 3 values) each measurement cycle, Modes 8-11 provide the abilityof the Remote Display to extract one of four sequential values and dis

*= Recognition character# = Device address from 1-9, A to V, or 0 for common address.C = Command letter H, K, L.S = Sign of value, space (or +) for p

-21-5.5 RECOGNITION CHARACTER AND START AND STOP CHARACTERSThe meter recognizes an asterisk ( * ) as the command recognition character. In the counte

BF Analog Setup Bit 7 6 5 4 3 2 1 0 bit0 = Analog Out Unfiltered1 = Analog Out Filtered0 = Current Output1 = Voltage Output0 0 0 0 0 0 = Not used

-23-31 Serial Cnfg1 Bit 7 6 5 4 3 2 1 0 Continuous Output Data Rate(continued) 0 1 1 1 18.1 21.81 0 0 0 36.3 43.51 0 0 1 72.3 86.70 0 0 300 baud0

-24 -2C Alarm Cnfg2 Bit 7 6 5 4 3 2 1 0 Alarm Trigger Delay60 Hz 50Hz0 0 0 .018s .021s0 0 1 .035 .0430 1 0 .07 .0850 1 1 .14 .171 0 0 .28 .341 0 1 .56

RAM HEX DATA TABLEMS Mid LSA1 A0 9F Analog high value9E 9D 9C Analog low value9B 9A 99 Deviation Alarm298 97 96 Deviation Alarm18F 8E 8D Offset value8

6.2 COUNTER 1-BYTE RAM DATA TABLE Hex Address Name Bit Assignment43 Resolution Bit 7 6 5 4 3 2 1 00 0.00001 multiplier1 0.0001 mu

-27-36 Lockout2 Bit 7 6 5 4 3 2 1 0 Bit=0 is unlocked for all items1 Change Item # locked1 CALib locked1 Ser 1, Ser 2, Ser 3 locked1 An Lo, An Hi, An

-28-33 Serial Cnfg3 Bit 7 6 5 4 3 2 1 0 Transmit(Cont'd) 1 0 0 Peak value only1 0 1 All active items + Peak0 Termination chars end of all items o

1.0 HARDWARE AND SOFTWARE SETUPThe word “modular” refers to telephone-type extension cable and connections.To connect a single meter to the computer

-29-2E Setup Bit 7 6 5 4 3 2 1 0 EXTIN A EXTIN B0 0 0 0 Meter Reset Function Reset0 0 0 1 Meter Reset Hold0 0 1 0 Meter Reset Peak Display0 0 1 1 Mete

-30-2C Alarm cnfg2 Bit 7 6 5 4 3 2 1 0 #Consecutive readings to Alarm0 0 0 10 0 1 20 1 0 40 1 1 81 0 0 161 0 1 321 1 0 641 1 1 1281 Alarm 1 Hystere

NON-VOLATILE MEMORY ADDRESSES (2 bytes/address)Sign + Magnitude XXXX XXXX XXXX XXXX XXXX XXXX S=SignS Magnitude Sign = 1 for negativeSign+DP+Magnitud

6.3 WEIGHT METER1-BYTE RAM DATA TABLE Hex Hex Address Item Name Value6B Configuration Bit 7 6 5 4 3 2 1 00 =

-33-33 Lockout1 Bit 7 6 5 4 3 2 1 0 bit = 0 is unlocked for all items1 = Count locked1 = Setup, config and dEC.Pt locked1 = Input type locked1 = Chan

2F Filter Bit 7 6 5 4 3 2 1 00 0 0 0 Auto Filter0 0 0 1 Batch (16 samples) filterTime constant 60 Hz 50 Hz0 0 1 0 Moving Average .07s .085s0 0 1 1 Mov

3-BYTE RAM MEMORY DATA All items except Scale Factor use this format:Note: Hex value (2's complement) MS byte Mid byte LS byte X X

Hex AddressesMS Mid LSA1 A0 9F Analog high value9E 9D 9C Analog low value9B 9A 99 Deviation Alarm298 97 96 Deviation Alarm18F 8E 8D Offset value8C 8B

-38 -7.0 SOURCE LISTINGB & B Electronics Manufacturing Co.707 Dayton RoadOttawa, IL 61350Phone: (815) 433-5100Fax: (815) 433-5109Website: www.

WARRANTYLaurel Electronics Inc. warrants its products against defects in materials or workmanship for aperiod of one year from the date of purchase.In

1.2 RS232 AND RS485 WIRING CONNECTIONSThe cable connections to an IBM PC-compatible computer are different for RS232 and RS485.The RS232 cable connect

Copyright 1996-2004 Laurel Electronics Inc. 06/04 Rev. E

Another alternative for RS-485 is to use an RS-232 to RS-485 converter that plugs into thecomputer RS-232 receptacle external to the computer and is p

1.3 RS-232 AND RS-485 JUMPERS SETTINGSRS232 InterfaceJumper g - installed for normal operationJumper h - installed when used as a slave display witht

DIGIT SELECT KEYVALUE SELECT KEYMENU KEY Ser 1Serial interface setup(only enabled if communica-tions board installed) Ser 2Serial interface

DIGIT SELECT KEY VALUE SELECT KEYMENU KEY 00000RS485 full or half duplex 00000Meter recognition characterand start & stop character 0000

2.0 INTERFACE INFORMATIONThe series of DPMs and counters offers RS232 or RS485 serial communication interface boardsthat may be connected by cable to