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1. y Figure 18 PLC Scan First the input data is read at the beginning of each scan The data has two sources the PLC s physical inputs and data that are entered via the PLC s keypad Next the program is executed The user creates the PLC control program The program is composed of instructions that are written in the Ladder language and is written using the PLC s proprietary software All program instructions are executed in each scan cycle Last the outputs are updated with the new data The sample program below causes an alarm connected to output 1 to actuate whenever a gate connected to input 1 opens The command ab means that the status of the gate is checked at the beginning of each scan When the gate is open the value in the operand is 1 or on When the gate is closed the value in the operand is 0 or off The command iB controls the alarm When the value in Ds contact 1 is found to be 1 the alarm is switched on When the value is 0 the alarm is off Table of Figures PL eo ei Figure 1 The Vision120 OPLC System 0 Figure 2 Connnectors and Mounting Brackets lla Figure 3 Panel Mounting the Controller i ERRE Figure 4 Panel Mounted 12 eee Figure 5 Snapping the Controller on to the DIN Rail ipd E TD HO E ER ER E Figure 6 Proper DIN Rail Position libia Figure 7 Power Supply Wiring Figure 8 Increase the Contact Life Span I CRA O RR DH Fig
2. Function Block FBs in use Password New Hardware Configuration Preface Possible Actions Shows a list of all function blocks that have been downloaded into the controller Both the FB name and its version are displayed e Seta New Password Check if I O Expansion Modules are installed Note that I O Expansion Modules are represented by letters Identical module types are represented by identical letters as shown below Shows if an on board I O or I O module is short circuited Vision120 OPLC User Guide uii Configuration ET Expo leta Ie E JE Il Short 0000 Onboard Short Figure 17 Information Mode Hardware Configuration vi Appendix A System Data Types The Vision OPLC operating system user program interface includes System Bits SB System Integers SI System Long Integers SL and System Double Words SDW listed in the tables below Specific data types are linked to fixed parameters and are read only by the user program such as SB 2 Power up bit You may write into certain data types These are marked with an asterisk such as SI 8 Unit ID All SBs SIs SLs and SDWs not listed are reserved for use by the system Table 6 System Bits SB 0 OW N OO A W I 30 31 32 40 63 200 215 236 237 250 251 System Bit Functions Function Always 0 Always 1 Power up bit 1 second pulse Divide by zero Output s short circuit Keyboard is
3. 3 Power Supply Power Supply The controller requires an external 12 or 24VDC power supply The permissible input voltage range is listed in the technical specifications sheet supplied with the controller You must use an external circuit protection device as shown in Figure 7 page 16 Safety Considerations A 3 N 2 Do not touch live wires A non isolated power supply can be used provided that a OV signal is connected to the chassis Standard safety considerations require that metal cabinet panels be earthed to avoid electrocution Do not connect either the Neutral or Line signal of the 110 220VAC to the device s OV pin In the event of voltage fluctuations or non conformity to voltage power supply specifications connect the device to a regulated power supply The wiring of this device is specifically designed to be safe and easy A technician or engineer trained in the local and national electrical standards should perform all tasks associated with the electrical wiring of the device Double check all wiring before turning on the power supply Wiring the Power Supply AN Do not use tin solder or any other substance on the stripped wire that might cause the wire strand to break Install at maximum distance from high voltage cables and power equipment To avoid damaging the wire do not exceed a maximum torque of 0 5 N m 5 kgfm We recommend that you use crimp terminals for wiring use 26 14 AWG
4. active 100 mS pulse Battery low HMI keypad entries completed Refresh current LCD screen display HMI keypad entry in progress Keypad keys see the following table Network operands Network communication error Network disable Keypad entry within limits Keypad entry exceeds limits 33 Vision120 OPLC User Guide Table 7 System Bit SB SB 40 SB 41 SB 42 SB 43 SB 44 SB 45 SB 46 SB 47 SB 48 Keypad Key elle symbol be EN A 3 N EE Keypad System Bit Functions System Bit SB SB 49 SB 50 SB51 SB 52 SB 53 SB 57 Keypad Key wyz 9 JEE DI Table 8 System Integer 0 6 7 e 9 30 31 32 33 34 80 81 82 83 200 201 236 237 Appendix A System Data Types System Integer Functions Function Scan Time mSec Current key pressed LCD contrast Unit ID LCD Backlight intensity Current second according to RTC Current time according to RTC Current date according to RTC Current year according to RTC Current day according to RTC Modem Status COM 1 Modem Error Code COM 1 Modem Status COM 2 Modem Error Code COM 2 Network operands Network communication error code Network failed unit ID Vision120 OPLC User Guide Table 9 System Long Integer Functions System Long Integer Function 4 Divide Remainder signed divide function Table 10 System Double Word Functions System Double W
5. contains a black seal used for panel mounting the controller a CD ROM containing VisiLogic software used to program the controller a technical specification sheet and a programming communication cable Kits comprising CANbus ready models also contain a green plastic CANbus plug in connector These items are not pictured in Figure 2 Figure 2 Connnectors and Mounting Brackets Vision120 OPLC User Guide Safety and Environmental Guidelines AN AN Panel Mounting Do not install in areas with excessive or conductive dust corrosive or flammable gas moisture or rain excessive heat regular impact shocks or excessive vibration Do not place in water or let water leak onto the controller Do not allow debris to fall inside the unit during installation Double check all the wiring before turning on the power supply Do not touch live wires Stay as far as possible from high voltage cables and power equipment Leave a minimum of 10mm space for ventilation between the top and bottom edges of the controller and the enclosure walls Before you begin note that the panel itself cannot be more than 5 mm 0 197 thick 1 2 Make a panel cut out that measures 92 x 92 mm 2 34 x 2 34 Check the seal that is placed over the back of the unit The seal must fit snugly against the back rim of the operating panel Slide the controller into the cut out Push the two black plastic mount
6. e Maximum number of controllers in a network 63 viii Preface 24V Power Supply Circuit protection device 1212 terminating resistor 12192 terminating resistor Figure 15 CANbus Wiring Diagram Chapter 6 Information Mode Information Mode is a utility that is embedded in the operating system of the controller Via Information Mode you can view data on the LCD screen use the controller s keyboard to directly edit data and perform certain actions such as resetting the controller You can enter Information Mode at any time without regard to what is currently displayed on the LCD screen Viewing data does not affect the controller s program Performing actions such as initializing the controller can influence the program Note that when you use Information Mode the keyboard is dedicated to that purpose The keys return to normal application functions when you exit Information Mode Using Information Mode 1 To enter Information mode press the lt i gt button on the Vision s keyboard down for several seconds 2 Enter your password The default password is 1111 This password remains in effect until you change it via the Information Mode screen described in the table below 3 The controller enters Information Mode showing the first category Data Types Caution e The controller will block entry into Information mode until the correct password has been entered Thi
7. e a clamping diode in parallel with each inductive DC load e an RC snubber circuit in parallel with each inductive AC load This is illustrated in Figure 8 below Yauritronics V L1 L2 L3 24VDC 115 230VAC Figure 8 Increase the Contact Life Span Installing UO Expansion Modules An adapter enables you to integrate I O Expansion Modules into the system You plug an I O expansion cable into the appropriate port located on the right side of the controller connect the cable to the adapter and then plug I O Expansion Modules into the adapter as shown in the following figures Vision120 OPLC User Guide TIT EX Al Uaunitronics Expansion Adapter PWRE m COMM Figure 9 Integrating I O Expansion Modules Exact instructions are provided with the adapter and I O Expansion Modules e Turn off the power before installing I O expansion modules Chapter 5 Communications This chapter contains guidelines for communications connections The controller has 2 RJ 11 type serial communication ports Each port can be adapted to either the RS232 or RS485 standard via jumpers located within the controller and the appropriate VisiLogic program settings CANbus ready models also offer a CANbus port AN Caution RS232 Via RS232 you can Turn off power before making communications connections Do not connect the controller directly to a telephone or telephone line The RJ 11
8. matching receptacle Do not force the board into place doing so may damage the controller Close the controller by snapping the plastic cover back in its place If the card is placed correctly the cover will snap on easily Specific controller models comprise 1 port for CANbus networking purposes Via this port you can create a decentralized control network of up to 63 controllers This is sometimes called a multi master network In such a network CANbus enables inter PLC data exchange Unitronics CANbus control network is run by a separate isolated power supply that is not part of the network power supply CANbus Specifications Power Requirements 24 VDC 4 40mA max Galvanic Isolation between CANbus and controller Yes Max Network Cable Length Vii Vision120 OPLC User Guide 1 Mbit s 25m 500 Kbit s 100 m 250 Kbit s 250 m 125 Kbit s 500 m 100 Kbit s 500 m 50 Kbit s 1000 m 20 Kbit s 1000 m Note Cable lengths over 500 meters require an additional power supply Wiring Considerations e Use twisted pair cable DeviceNet thick shielded twisted pair cable is recommended e Network terminators These are supplied with the controller Place terminators at each end of the CANbus network Resistance must be set to 1 1210 1 4W e Connect the ground signal to the earth at only one point near the power supply e The network power supply need not be at the end of the network
9. type serial ports are not isolated note that communication signals are related to the controller s OV this is the same 0V used by the power supply Ports must always be used with an appropriate adapter e Download programs from a PC e Communicate with external devices You can for example use your PC to access a networked controller via its RS232 port You can then view read and write data into any unit RS232 also allows you to view the network via a SCADA program 19 Vision120 OPLC User Guide Table 1 RS232 Pinout Diagram Pin Number RS232 Function 1 DTR signal 2 OV reference 3 TxD signal gt i Pin 1 4 RxD signal 5 OV reference 6 DSR signal Note that standard programming cables do not provide connection points for pins 1 and 6 In addition note that when a port is adapted to RS485 Pin 1 DTR is used for signal A and Pin 6 DSR signal is used for signal B as shown in Table 2 Downloading Your Program You can download programs via a direct cable connection between your PC and the controller The cable should not exceed 3 meters in length Connecting the Controller to the PC e Connect the controller to your PC using the communication cable as shown below Figure 10 Connecting the PC to the Controller Preface RS485 Use RS485 to create a multi drop network containing up to 32 devices Table 2 RS485 Pinout Dia
10. wire for all wiring purposes 13 Vision120 OPLC User Guide 1 Strip the wire to a length of 7 0 5 mm 0 250 0 300 inches 2 Unscrew the terminal to its widest position before inserting a wire 3 Insert the wire completely into the terminal to ensure a proper connection according to the figure below 4 Tighten enough to keep the wire from pulling free See Note Circuit protection device DATE CE E EX ELE BO ov v Vision120 Figure 7 Power Supply Wiring Earthing the Power Supply To maximize system performance avoid electromagnetic interference by e Mounting the controller on a metal panel e Farthing the controller s power supply connect one end of a wire 14 AWG to the chassis signal connect the other end to the panel Note The wire used to earth the power supply must not exceed 8 cm in length If your conditions do not permit this do not earth the power supply Chapter 4 I Os The controller offers an e On board I O Configuration Each model offers a different I O configuration e T O Expansion Port Via an adapter you can connect a broad variety of I O modules to the controller s I O expansion port Wiring Considerations On board I Os I O Connectors A technician or engineer trained in the local and national electrical standards should perform all tasks associated with the electrical wiring of the controller Input or ou
11. 2 5 V s or 20 OPLC Graphic Operator Panel amp Programmable Logic Controller Famo kok Jo SNO 4 LO LS gt Waas ir Sd Na aj 4 NV d aunitronics Industrial Automation Systems V120 21 G1 No part of this document may be used for any purpose other than for the purposes specifically indicated herein nor may it be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and or recording for any purpose without written permission from Unitronics The information appearing in this document is for general purposes only Unitronics makes no warranty of any kind with regard to the information appearing in this document including but not limited to implied warranties of merchantability and or fitness for a particular use or purpose Unitronics assumes no responsibility for the results direct and or indirect of any misuse of the information appearing in this document nor for any use of the Unitronics products referred to herein in any manner deviating from the recommendations made in this document Unitronics assumes no responsibility for the use of any parts components or other ancillary appliances including circuitry other than as recommended hereunder or other than that embodied in the Unitronics product Unitronics retains all rights to its proprietary assets including but not limited to its software products which are copyri
12. 8 x 2 52 e Mounting either panel or DIN rail mountable e Power supply 12 or 24VDC e Real time clock RTC enables time and date controlled functions e Battery back up protects real time clock RTC and system data Operating Panel The operating panel comprises a graphic display screen and keyboard e The LCD screen displays both user defined text according to fonts selected in the HMI program and user designed graphic images e The V120 keypad contains 16 keys I Os Different V120 models offer different on board I O configurations In addition to the on board I Os the controller s I O expansion port enables up to 8 I O Expansion Modules to be connected to a single controller Note that I O technical specifications are provided in separate documents Communications Serial Communications The controller has 2 serial communication ports These may function in conjunction with either the RS232 or RS485 standard in accordance with the instructions provided in Chapter 5 Communications page 19 CANbus Specific controller models comprise 1 port for CANbus networking purposes Programming Vision OPLC programs comprise both the PLC and HMI applications The programmer writes both applications on a PC using VisiLogic software PLC Application The PLC application is the program that enables the controller to perform its automation task The Ladder code memory can take up to 96K VisiLogic enables the progr
13. A ie lite ih lai 15 IM cC ee A I O Connectors ip APRA T IO Connections VO eite ina Ania E Wire Size and Specifications I O Options According to Model 16 serene Rei petet DEOR a PN ONTE Digital Inputs 1 High Speed Counter Shaft encoder pr i 7 Analog I Os TE Dana baila si avid UR Digital Outputs Installing UO Expansion Modules sse enne 17 Chapter 5 gt 19 7 19 Downloading Your Program 20 20 3 e Rei iI kero o Connecting the Controller to the PC 7 21 2 35485 Network Termination Settings RS232 RS485 Jumper Geitngs i 22 Eltere eebe i na EIL NUM e eiu c rs 25 2 TTT ETT TTT A CANbus Wiring Specifications Chapter 6 Information 27 Using Information ModE EE 27 Appendix A System Data Types s sscssesscsssosscsssesssossesssossvessoesseeseecsseceseoescsssosssosscesscessesscess 33 Preface Appendix B New na daea anodas ea eoio bo eS EOE ai so Veia 37 Vision120 OPLC User Guide Warnings and Safety Guidelines Guidelines for user safety and equipment protection This manual is intended to aid trained and competent personnel in the installation of this equipment as defined by the European directives for machinery low voltage and EMC Only a technician or engineer trained in the local and national electrical standards should perform tasks associated with the electrical wiring of this device Symbols are used to highlight information relating to the use
14. Memory Bits System Bits View bit status Change bit status Set Reset Timers Enter a Preset Timer value View the current timer value and status by selecting the R T option Memory Integers System Integers Memory Longs System Longs Memory Double Words System Double Words View integer long integer double word values Change values Toggle Base view the value in decimal or hexadecimal form Vision120 OPLC User Guide Category Possible Actions System Model amp O S Ver e Check the controller model number and operating system version e Check whether the controller is in Run or Stop mode Working Mode e Check whether the controller is in Run or Stop mode e Resetthe controller This restarts your program restoring power up values to all data types except for those protected by the battery memory backup e Initialize the controller This restarts your program and initializes all values restoring 0 values to all data types Time amp Date e View the Real Time Clock RTC settings Note that the RTC settings control all time based functions e Change the RTC settings via the controller s keyboard Unit ID The Unit ID number identifies a networked controller You can e Change the ID number Serial Port 1 e View and edit communication settings Serial Port 2 e Select to change the new settings CANbus Baud Rate e Change the CANbus baud rate
15. ammer to Preface e Build the PLC application using click and drop Ladder elements and functions e Create a modular program comprised of separate subroutines that can be called into the PLC application at any time HMI Application The HMI application customizes the operator interface Use it to e Assign functions to the keyboard keys and enable the operator to enter data via the controller keyboard e Create and display text graphic images and variable system data on the controller s screen in response to run time conditions An HMI application can comprise up to 255 Displays Each Display can include text graphic images and variables Variables allow you to display system data on the controller s LCD screen bit integer and timer values times and dates I O status and values and text from the variable text display list Variables can also use a graphic image or a bar graph to represent a value or range of values Up to 32 fonts may be included in a typical application A variety of languages are supported When the VisiLogic program is complete the programmer downloads it into the controller The data types in the tables below can be used in your applications Data Type Data Type Memory Bits coils Timers 1024 128 32 bit Memory Integers registers Inputs 1024 16 bit 544 Memory Long Integers Outputs 256 32 bit 544 Double Word unsigned 64 32 bit Syste
16. and national standards and regulations Chapter 1 Overview Introducing the Vision120 OPLC The palm sized Vision120 OPLC is a member of the Vision OPLC series programmable logic controllers that comprise an integral graphic operating panel The Vision120 offers an on board I O configuration that varies according to model Plug in I O Expansion Modules can also be easily integrated to greatly extend the system s control capacity All Vision OPLCs offer serial communications CANbus networking options and a real time clock RTC Vision OPLC operating panels contain a graphic LCD screen and a keyboard The LCD screen displays operator instructions alarms and real time variable system information via text and graphic images The operator uses the programmable keyboard to enter or modify data within the Vision controlled system This communication interface between the controller and operator is referred to as the HMI or Human Machine Interface throughout this manual Figure 1 The Vision120 OPLC System These features combine to offer a cost effective solution for small sized industrial applications that require both an operator s interface and the ability to control low end processes according to time and ambient conditions Acronym for Operating panel Programmable Logic Controller Vision120 OPLC User Guide Technical Description The Vision120 OPLC V120 e Dimensions 96 x 96 x 64mm 3 78 x 3 7
17. board I Os and I O expansion modules Chapter 5 Communications Contains program download instructions as well as information on serial communications and CANbus networking including wiring Chapter 6 Information Mode Describes how to use Information Mode to view runtime values set timer values reset and initialize the controller and check I O module status Appendix A System Data Types Contains tables showing internal system elements Appendix B New PLC Users Provides information for new PLC users Vision120 OPLC User Guide Table of Contents Preface nione RZ IRIS III AIA II i Guidelines for user safety and equipment protection ssssssseeee iii Warnings oi kor pe mu rn rr prn e mu do ai OTO iv A O 5 Introducing the Vision120 OPLO ine aaa ia anaana ge dheas as basis nnne 5 E EE E E E E T Technical Description opc Safety Guidelines Chapter 2 Mounting ssssssssssssessssssssnsssssosssrisssssssss sees soss soado rossa Vanson Voo soss roop sss sssr v Sosva p v e 9 Before You e BEE 9 Safety and Environmental Guidelines ii 10 RR pO RR ERES RR AM e EM RAUM Panel Mounting Se ANE een a mn nre ete p nnne eec ves oie DIN Rail Mounting Chapter 3 Power EE 13 0 13 Safety ConsideratioNS i 13 Wiring the Power Supply ii 13 Chapter 4 OS Ia E 15 Wiring Considerations ic nia e e dea 15 A
18. ed a maximum torque of 0 5 Num 5 kgf m e Do not use tin solder or any other substance on the stripped wire that might cause the wire strand to break e We recommend that you use crimp terminals for wiring I O Options According to Model Technical specifications regarding specific I O configurations are supplied with your model controller Digital Inputs Depending on your controller model inputs may e function at 12 or 24 VDC in accordance with wiring and jumper settings e be set to pnp source or npn sink via a single jumper and appropriate wiring Input values are placed in operands represented by the letter T when you write your program They are numbered from 0 High Speed Counter Shaft encoder According to your controller model certain inputs can function as either a high speed counters shaft encoders or as normal digital inputs Analog 5 Specific controller models contain analog I Os These may also comprise PT100 or thermocouple inputs Preface Digital Outputs Each controller contains either relay or transistor outputs The digital output value is placed in operand O when you write your program The power supply for transistor outputs requires an external circuit protection device See the technical specifications supplied with the controller Relay Contact Protection To increase the life span of your contacts and protect the controller from potential damage by reverse EMF connect
19. ghted and shall remain the property of Unitronics Copyright protection claimed includes all Forms and matters of copyrightable materials and information legally allowed including but not limited to material generated from the software programs which are displayed on the screen of the Unitronics products such as styles templates icons screen displays looks etc Duplication and or any unauthorized use thereof are strictly prohibited without prior written permission from Unitronics All brand or product names are used for identification purpose only and may be trademarks or registered trademarks of their respective holders Unitronics reserves the right to revise this publication from time to time and to amend its contents and related hardware and software at any time Technical updates if any may be included in subsequent editions if any Unitronics product sold hereunder can be used with certain products of other manufacturers at the user s sole responsibility Preface This guide contains essential information for Vision1 20 OPLC users Warnings and Safety Guidelines Read this section carefully before installing and operating the device Chapter 1 Overview Contains a general description of the device s features and functions Chapter 2 Mounting Describes mounting considerations and procedures Chapter 3 Power Supply Explains wiring procedures and considerations Chapter 4 I Os Presents information regarding on
20. gram Pin Number Function 1 A signal 2 RS232 signal 3 RS232 signal Pin 1 4 RS232 signal 5 RS232 signal 6 B signal Note that when a port is set to RS485 both RS232 and RS485 can be used simultaneously if flow control signals DTR and DSR are not used e Note that the ports are not isolated If the controller is used with a non isolated external device avoid potential voltage that exceeds 10V To avoid damaging the system all non isolated device ports should relate to the same ground signal Caution e Use shielded twisted pair cables e Minimize the stub drop length leading from each device to the bus e Ideally the main cable should be run in and out of the network device e Do not cross positive A and negative B signals Positive terminals must be wired to positive and negative terminals to negative Vision120 OPLC User Guide RS485 Network Termination Settings The jumper settings shown in Table 4 determine whether the controller can function as an end device in a RS485 network Note that the factory default setting is ON If the OPLC is not a network end device set both jumpers to OFF RS232 RS485 Jumper Settings The tables below show how to set a specific jumper to change the functionality of the controller To open the controller and access the jumpers refer to the instructions on the next page Table 3 RS232 RS485 Jumper Setti
21. ing brackets into their slots on the sides of the controller as shown in Figure 2 on page 9 Tighten the bracket screws against the panel as shown in Figure 3 page 11 Preface 5mm max 0 197 max Y A 89 2mm 3 512 mmm 0 244 64mm 2 52 Figure 3 Panel Mounting the Controller When properly mounted the controller is squarely situated in the panel cut out as shown in Figure 4 Figure 4 Panel Mounted Vision120 OPLC User Guide DIN Rail Mounting 1 Snap the controller onto the DIN rail as shown in Figure 5 Figure 5 Snapping the Controller on to the DIN Rail When properly mounted the controller is squarely situated on the DIN rail as shown in Figure 6 96mm 3 78 symbol T abc mo 6 l 96mm 3 78 Figure 6 Proper DIN Rail Position Chapter
22. m data types listed below are linked to certain values or controller functions and are reserved for use by the system Some of them are available for use in your program See Appendix A System Data Types Vision120 OPLC User Guide Data Type Data Type System Bits 512 System Long Integers 64 32 bit System Integers 512 16 bit Safety Guidelines AX AN Caution e System Double Word 64 32 bit Failure to comply with appropriate safety guidelines can result in severe personal injury or property damage Always exercise proper caution when working with electrical equipment Check the user program before running it Do not attempt to use the controller with voltage exceeding permissible levels Permissible voltage levels are listed in the technical specifications provided with your controller Install an external circuit breaker and take all appropriate safety measures against short circuiting in external wiring Ascertain that terminal blocks are properly secured in place Chapter 2 Mounting The controller can be either panel mounted or snap mounted to a DIN rail Before You Begin Before you begin installation procedures check the contents of the controller kit Standard kits contain the controller green plastic plug in connectors and 2 black plastic mounting brackets each with a screw inserted for panel mounting These elements are illustrated in Figure 2 The kit also
23. ngs COM 1 COM2 To use as JP1 JP2 To use as JP5 6 RS232 A A RS232 A A RS485 B B RS485 B B Table 4 RS485 Termination Settings COM 1 COM2 Termination JP3 JP4 Termination JP7 JP8 ON A A ON A A OFF B B OFF B B e Default factory setting Opening the Controller Preface AN e Before opening the controller touch a grounded object to discharge any electrostatic charge e Avoid touching the PCB board directly by holding the PCB board by its connectors Figure 12 Removing the Top PCB board Turn power off before opening the controller Locate the 4 slots on the sides of the controller Using the blade of a flat bladed screwdriver gently pry off the back of the controller as shown in Figure 11 Gently remove the top PCB board Use one hand to hold the top most PCB board by its top and bottom connectors as shown in Figure 12 With the other hand grasp the controller while keeping hold of the serial ports this will keep the bottom board from being removed together with the top board Steadily pull the top board off Vision120 OPLC User Guide 5 Locate the jumpers shown in Figure 13 then change the jumper settings as required Figure 13 RS232 RS485 Jumpers Factory Default Settings vi Figure 14 Replacing the Board CANbus Preface Gently replace the PCB board as shown in Figure 14 Make certain that the pins fit correctly into their
24. ord Function 0 10mS counter 4 Divide Remainder unsigned divide function 5 Output s short circuit bitmap Appendix B New PLC Users PLCs or programmable logic controllers are electronic control systems based on microprocessors A PLC performs control functions in accordance with its software program of external automated equipment Parts of a PLC Operating Panel The operating panel provides what is called the HMI or Human Machine Interface between you and the PLC The panel is composed of an LCD screen and a customizable keypad The LCD screen displays messages to the operator You assign functions to the keys when you write your software program Inputs Inputs receive signals from external devices such as switches push buttons and variable voltage signals from analog devices The inputs convert the voltage to signals that the PLC can process Outputs Outputs send signals from the PLC to external devices such as lights or contactor coils Outputs convert the PLC program results into signals that these external devices can process CPU The Central Processing Unit is the brain of the PLC It executes the control program How PLCs Work The figure below shows the PLC cycle This cycle is called a scan The scan cycle is performed continuously 37 Vision120 OPLC User Guide Y 1 Reads data from inputs y 2 Processes data according to program h 4 3 Sends data to outputs
25. r s personal safety and protection of the equipment throughout this manual When any of the following symbols appear the associated information must be read carefully and understood fully Danger Symbols Symbol Meaning Description Danger The identified danger can cause severe physical and property damage Warning The identified danger can cause physical and property damage Caution Caution Use caution Preface Warnings Under no circumstances will Unitronics be liable or responsible for any consequential damage that may arise as a result of installation or use of this equipment All examples and diagrams shown in the manual are intended to aid understanding They do not guarantee operation Unitronics accepts no responsibility for actual use of this product based on these examples Due to the great variety of possible applications for this equipment the user must assess the suitability of this product for specific applications Make sure to have safety procedures in place to stop any connected equipment in a safe manner if the controller should malfunction or become damaged for any reason Do not replace electrical parts or try to repair this product in any way Only qualified service personnel should open the device s housing or carry out repairs The manufacturer is not responsible for problems resulting from improper or irresponsible use of this device Please dispose of this product in accordance with local
26. s is why you must record any password you set for your controller The data in Information Mode is arranged in Categories Each Category contains several Subjects You navigate Information Mode by using the keyboard buttons as shown below To exit Information mode press the lt ESC gt button on the Vision s keyboard Each press returns one level up Press the number of times necessary to exit Note that when you reenter Information Mode the controller will return to the last Category viewed 27 Vision120 OPLC User Guide Return one Vision120 Data nA se cioj ee 2 7 LN 4 Scroll through Select a symbol 1 gt Categories Category ZZ Subjects Subject V pars 7 WXYZ 9 N unitronics Figure 16 Navigating Information Mode Table 1 shows the categories of information that can be accessed in this mode Category Data Types Table 5 Inputs Information Mode Preface Possible Actions View input status Force input status to 1 FR1 or 0 FRO Forced values stay in effect until Normal mode NRM is selected or until the controller is initialized or reset Note that forced values do influence your program This can be useful in testing the effect of an input condition on an output status Outputs View output status Force output status to 1 FR1 or 0 FRO Note that forced output values do not affect your program Set Reset output status
27. tput cables should not be run through the same multicore cable or share the same wire Do not lay input output cables near high voltage power cables Allow for voltage drop and noise interference with input output lines used over an extended distance Please use wire that is properly sized for the current load Double check all the wiring before turning on the power supply Unused I O pins should not be connected Ignoring this directive may damage the controller VO connection points are provided by external connectors at the top and bottom of the controller The connectors plug in enabling quick easy removal They provide screw type connection points for the power source inputs and outputs The connection points are clearly labeled on the controller itself The top connector generally provides connections for the power supply analog and or digital inputs and high speed counter shaft encoder The bottom connector generally provides analog and or digital output connection points 15 Vision120 OPLC User Guide UO Connections l Strip the wire to a length of 7 0 5mm 0 250 0 300 inches 2 Unscrew the terminal to its widest position before inserting a wire 3 Insert the wire completely into the terminal to ensure a proper connection 4 Tighten enough to keep the wire from pulling free Wire Size and Specifications e Wire the inputs and outputs using 26 14 AWG wire e To avoid damaging the wire do not exce
28. ure 9 Integrating I O Expansion Modules p Figure 10 Connecting the PC to the Controller DD IER Figure 11 Opening the Controller PX p Figure 12 Removing the Top PCB board ados ds eoo Figure 13 RS232 RS485 Jumpers Factory Default Settings TETTE TETTE AIN Figure 14 Replacing the Board PA Figure 15 CANbus Wiring Diagram Figure 16 Navigating Information Mode OL TE EE ba anda Figure 17 Information Mode Hardware Configuration SO kar a a ES EA ORI E Figure 18 PLC Scan 39 Vision120 OPLC User Guide Notes

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