USER MANUAL for VE SRS Serial Redundancy Switch.
Contents
1. vernier media converters Here you have to set Baud Rate Data Bits Parity Stop bits and Flow Control Set Baud rate as 9600 Data Bits as 8 Parity as None and Stop Bits asl Steps Now following screen will appear On the left hand bottom corner of the Hyper Terminal application it will show the status as connected In the Next two text boxes it shows the baud rate in auto detection mode Some times with auto detection mode Hyper Terminal does not work properly Hence click on the Disconnect button in the tool bar of the HyperTerminal Now disconnected status will appear in the Left hand bottom corner text box Click on the file menu and then click on the Properties submenu The Property Page appears Now follow instruction same as Step3 and Step4 The third text box in the bottom shows the baud rate setting as 9600 8 N media converters Step 6 Select the Settings Tab from the Property page Form as shown in the following picture is displayed Click on the ASCII Set Up button rm My Documents Config HyperTerminal N Fie Edit View Call Transfer Help Dle 23 alel l Config Properties p EIES Connect To Settings Function arrow and ctrl keys act as Terminal keys C Windows keys Backspace key sends CtH Del Ctri H Space Ctri H Emulation Auto detect Terminal Setup Telnet terminal ID JAN Sl Backscroll buffer lines 500 E I Play sound2. MANES media converters USER MANUAL for VE SRS Serial Redundancy Switch 1 INTRODUCTION In Serial Communication there is a constant risk of the link going down hence resulting in loss of data This problem becomes particularly grave when critical information is being communicated between two devices and a constant uninterrupted connection is mandatory The Redundancy switch helps maintain a loss free communication link between communicating equipment 2 OPERATION SRS 201 Serial Redundancy Switch Figure 1 SRS is a Serial Redundancy Switch used for offering Redundancy to 2 of RS232 RS485 ports These switches allow 2 Serial RS232 RS485 Ports Devices e g Controllers Computers PLC s to share one Output Common Serial device Normally the 2 Input ports are designated as Master amp Slave port The Output would be locked with the Master in a communication SRS will continuously monitor this communication In case of any break in communication SRS will immediately shift to Slave port amp continue the communication SRS can also be used to connect Multiple Masters to a Slave or vice versa Two Masters at the Input amp One Slave at the Output Whichever Master The device originating the Queries sends the query first the slave will respond to that Master amp continue the communication After finishing the communication SRS still waits to accept requests from the same port for 1 second Set Time Ou
3. Similarly if you desire to edit the delay Current Setting then just press 2 You will see the current setting on the screen and also you will be able to enter the new setting The modified setting can be viewed again by pressing 1 After dong modification you can come out of the configuration mode by pressing 3 1 e Exit Option MANES media converters 5 TECHNICAL SPECIFICATIONS Communication Ports 3 Ports for RS232 3 Ports for RS485 2Wire 4 Wire Indications Each port has 2 Red colored LED s indicating Transmit Tx and Receive Rx signals 2 LED s for indicating Auto Manual Mode 2 LED s for indicating Link1 Link2 selection in Manual Mode Connectors RS485 ports 4 Pin Howder connector RS232 ports DB9 Female for Common amp DB9 Male for others Power 3 Pin molded plug Toggle Switches Dimensions Weight Mounting Power Supply Power Consumption Environmental Operating Temperature 0 C to 55 C Relative Humidity 10 to 90 6 WIRING DETAILS For RS485 4 wire For RS 485 2 wire 5 SIGNAL of SR Will Connect to RX of your device SIGNAL of SRS Will Connect to RX of your device TX of your device TX of your device TX of your device TX of your device For RS232 Input Link ports Use a Straight cable to ensure that RX TX amp Gnd signals available on Pin 2 3 amp 5 respectively on the SRS to be connected to RX TX amp GnD signals of your de
4. Manual modes In Auto mode in case of Link failure Links are automatically selected or switched over In Manual mode Link1 Link2 Push button toggles between Link1 and Link2 Corresponding LED s indicate the current mode of operation and the Link that is active The default setting at Power ON is Auto mode The SRS2 1 has 3 Ports These 3 Ports can be individually set for either of RS232 or RS485 2 wire or RS485 4 wire interface with the help of link settings provided on the PCB inside the Switch The RS485 Signals of all Ports are provided on the 4 pin Howder terminals In the case of RS485 2 wire 2 pins on this connector will be unused For RS232 Common Port of the SRS 9 pin D type Male connector and for remaining 2 Ports 9 Pin D type Female connector are used The Ground of all 3 ports is Common In the Auto mode the Link selection will be done automatically depending up on the Activity on the Ports The relevant LED indications to indicate Auto Manual and the Active Link will be provided on the front panel MANES media converters SRS provides the users with the flexibility of selecting all the 3 ports as RS232 or RS485 The 485 signals are connected to the Howder connectors amp the RS232 signals are to be connected on the D type connector Please note that this is factory setting amp cannot be altered by the user very easily The baud rate of RS232 side is Auto adjustable The baud rate on the RS485 side is d
5. when connecting or disconnecting 2 Input Translation ASCII Setup Adobe Reader 6 0 Ba Belarc Advisor Disconnected Auto detect lAuto detect SCROLL caps num Capture Print echo Qconvo i4 Astart a e alog config HyperTerminal B cf a UD 751 PM Step 7 Following screen shows the ASCII Setup page Click on the Echo typed characters locally check box Whatever characters you type in the Hyper Terminal utility are displayed locally in the text box of the Hyper Terminal Press the Ok button on the ASCII Setup Page Now press the Ok button on the Settings Tab of the Property Page Click on the Connect button of the tool bar The status is shown as Connected My Documents Config HyperTerminal File Edit View Call Transfer Help oll sls ols zx My Network ConnectTo Settings Places Ti 21x f ASCII Sending E l E I Send line ends with line feeds Recycle Bin E V Echo typed characters locally Line delay p milliseconds Em Character delay fo milliseconds Internet Ja z Explorer A ASCII Receiving I Append line feeds to incoming line ends Microsoft T Force incoming data to 7 bit ASCII DENCE CROOK IV Wrap lines that exceed terminal width 4 Z Adobe Reader 6 0 Belarc Advisor Disconnected Auto detect Auto detect SCROLL CAPS NUM Capture Print echo Shortcut to OcConvo 14 GAstart a e alog config Hyperterminal Og WELA 7 51 PM vernie
6. ns and set the parameters In short this is an interactive session initiated by the SRS To get a better idea you can refer to below figure which shows a tree view of the menu options offered by the interactive configuration session You can follow below steps in order to configure different parameters of the SRS STEP 1 Ensure that COMMON Port of the SRS is set for RS232 mode If it is not in the RS232 Mode then make proper link setting in order to bring it in the RS232 Mode Connect SRS to the PC COM port through cross cable open the HyperTerminal utility of the PC The Hyper Terminal utility can be selected from Start Button Click Start button and follow this path Start gt Programs gt Communications gt Hyper Terminal It can be done as shown in the following picture Now click on the Hyper Terminal Menu Option media converters While Hyper Terminal is on the way to start message as shown in the following screen appears My Computer Shortcut to PPTs al Tel List New Folder TAE Ae ies Accessibility Microsoft Office Communications HyperTerminal EPEY OrCAD Release 9 1 Entertainment AT HyperTerminal Adobe Reader 6 0 Games d BE Internet Connection Wizard Belarc Advisor System Tools NetMeeting lt Internet ses Explorer WinZip Ces T Set Program Access and Defaults Internet Explorer Address Book Network and Dial up Connections nitiator Control Panel 1 1 8 16 Calculator Phone Diale
7. one through the switch setting 4 The 485 side Howder connectors have Link amp Common stickers pasted on them These connectors have to be connected on the respective Input Link or Output Common side of the SRS and cannot be swapped The SRS would malfunction is the connectors are swapped The Time out is default factory set at 1 sec Any other time out is also possible Please note that this is factory setting amp cannot be altered by the user 4 Time Out Configuration In the new version of the SRS the change over Delay can be programmed according to the user s requirement Once configured the desired delay it gets stored in the Non Volatile RAM of the SRS This document explains how to program this delay How to configure through Serial Port The SRS can be configured from COMMON Port when it is set for RS232 Mode For configuring the SRS you need to connect the COMMON Port of SRS to the serial port of the PC through 3 wire cross cable The cross cable is as shown in the following diagram On PC side you need to have some terminal software utility like Hyper Terminal With OS like Win95 Win98 Win 2000 etc it comes by default along with OS After connecting SRS to the PC Com port and starting it in Configuration mode SRS sends text message to the Hyper Terminal These messages are 2 Pin Female 9 Pin Female arranged in the menu like style Here PEELO D Connector user has to select desired optio
8. r Keil uVision2 Command Prompt ah HyperTerminal 2 Keil u ision3 Site S Outlook Express TCPIP Send Dallas Semiconductor MTK 2 Synchronize Programs y BJ Windows Explorer Documents C WordPad i fm lt Settings Search Help Run Shut Down Porat Meas is Go WD 6 39pm My Documents a Shortcut to My Computer PPTs a Tel List New Folder s 0 75 Internet a ALEEA 1 Explorer HyperTerminal by Hilgraeve Monroe Michigan USA For more power and convenience upgrade to hot new 4 HyperACCESS TODAY Developed for Adobe Reader oft Microsoft U pgra de Info i Copyright 1999 a ae by Hilgraeve Inc i Hilgraeve Inc Be i Belarc Advisor NetMeeting Shortcut to Qconvo 14 start 1 e a lol py Hyperterminal is fi i YD amp 6 43 PM vernier media converters Step2 Name the Hyper Terminal File and press Enter key This file can be saved and retrieved for the future reference 3 My Documents Connection Description Internet Explorer ow Microsoft Office Outlook Step3 Screen as shown in the following picture appears Select Connect to Tab and select the appropriate Com Port from the Combo box and click on the Configure button gt My Documents M Use county 7 Redial on busy Shortcut to Qconv0 14 1 which is as desired
9. r media converters EN U ee a eps SES My Documents octri out ose Installation STQ1228 add CARTO MODSIM32 cap_s sure that SRS 1S switched off CEEE o d cross cable is connected Bocas daa tween COMMON Port of the il pe ne RS and the PC Com Port which u have selected in the Hyper a srminal Now see that Hyper 3 RIT minal utility is selected on ur PC and Caps Lock is on bw press C from the key onan oem ard While you have pressed the I a on the SRS Keep Canon Upgrade JP Shorteutto Skb LnT Repairs ter C m a e ss essed for 2 seconds and release See OE eh Se ee ese key Now you can observe at the SRS has entered in to the ynfiguration mode The Select the Option start 3 Hyperterminal H Gve2 ofonfiguration menu appears in the Hyper Terminal window The ZB a nfiguration is menu driven My Documents octri outside Installation 5TQ1228 adi CodeVision MODSIM32 d 1S very simple letter sandip procedure C Compiler e main menu displays 3 tions which are a gt View elay b gt Edit Delay c gt Exit Sane lapel n Se ae you desire to view the delay 3 IT urrent Setting then just press You will see the current nsw i ERO eas OM e eee ting on the screen Following Upgrade TPP Stotatto Sib pars een 1S displayed Canon N LBP3200 Converter ModSim32 pip g IN FLIP 2 4 6 MP 314 E8 Ganes ModScal Shortcut to3 Modsim32 Step10
10. t according to the user s requirement default factory set 1 Sec Time Out During this period if request comes from the same Input port the SRS remains locked there After 1 second SRS is again free to use by any one of the ports Both the Masters cannot send the query together Two Slaves at the Input amp One Master at the Output The Output side of our Switch is connected to your Master device The device originating the Queries The query from the Master will be broadcasted to both the Slave ports amp the communication will be established with whichever port responds to query After finishing the communication SRS still waits to accept requests from the same port for 1 second default factory set Time Out During this period if request comes from the same Input port the SAS1 remains locked there After 1 second SRS is again free to use by any one of the ports Both the Slaves should not respond to the query together MANES media converters In the all the above options Manual switching for higher priority jobs is also available ON AOA COMMON Ti TA KX RA COMMON LINK 1 LINK 2 LINE 1 LINE 2 cl i AUTO MANUAL s k RAI TAI RA TS RAC TAC oO O O 6 STATUS LINE 2 TA TA RA RA TA TA EX4 RX LINE 1 LINE 2 FIGURE Figure 2 shows the Front panel of the SRS Two Push buttons Auto Manual and Link1 Link2 are provided The Auto Manual switch toggles between Auto and
11. vices For RS232 Output Common port Use a Cross cable to ensure that RX TX amp Gnd signals available on Pin 2 3 amp 5 respectively on the SRS to be connected to TX RX amp GnD signals of your devices MANES media converters 7 JUMPER SETTINGS In the event the Port type needs to be changed from RS232 to RS485 or vica versa or the Baud Hi A rate of the RS485 needs to be changed the SRS G G G aay n s has to be opened and the Jumper settings needs to be changed Below are the details given However we recommend that these changes be done only by the experts under our guidance yi CEA Hp Sea Cle Ea eb 4B o 321 ap WI as CAO jig EREA 321 ate a STOI PCB LAYOUT Solder Side CONNECTION MODE SETTINGS RS232 Mode RS485 2 Wire Mode RS485 4 Wire Mode For Common Port For Link 1 Port Ji Short 2 amp 3 J2 Short 1 amp 2 For Link 2 Port J3 hort 2 amp 3 J4 hort 2 amp 3 BAUD RATE SETTINGS Applicable only if using RS485 Mode 1200 2400 4800 9600 19200 38400 J9 Short 5 amp 6 Short 3 amp 4 Short 1 amp 2 J7 NOTE For J10 Always Short 1 amp 2 For J11 Always Short 2 amp 3 P O Box 234911 Dubai UAE Tel 971 4 2955966 Fax 971 4 2955977 E mail sales verniertech net
Download Pdf Manuals
Related Search