CX-Programmer User Manual (986752), страница 18
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It is possible to read these files back.If a file-card can be attached directly to the computer (via a PCMCIA controller, for example), then itcan be used as a disk device like a floppy drive, and files may be directly transferred with it.Page 84Revision 2.0OMRONCHAPTER 4 – Reference1, 2, 3…Note:1.Select the PLC object in the project workspace.2.Select the Transfer/To File or Transfer/From File options from the PLC menu.A dialogue is presented which allows the filename/s to be set or browsed.
Choosewhether to include Programs, Comments or Symbols in the transfer on thisdialogue.For programs, a short Comment may also be given for inclusion in the file.When loading comments, text within the program comments (for the project’s PLC)are overwritten. When loading symbols, the local and global symbols for the PLC andprograms are first emptied.If the file-card cannot be attached directly to the computerWhen the file-card cannot be attached to the computer, it is possible to transfer comments and symbolsto the PLC file-card directly using the Transfer to PLC option above. To write the program to the filecard, use the above steps to produce the program file on one of the computer’s disks. It is then possibleto transfer the file between the disk drive and the file-card on a PLC using the CX-Server file-cardcomponent – please refer to the CX-Server user-manual.Program MonitoringProgram monitoring allows the power flow of a PLC program to be displayed whilst the PLC programis running.
Power flow is displayed by a thick line across items in the Ladder program that currentlyhave power flowing through them.Note:The data from several PLCs can be monitored at the same time. Ensure the programhas been downloaded and the PLC mode set to Monitor.Use the following procedure to monitor a program.1, 2, 3…Note:1.Select the Program object in the project workspace to display the Ladder programin the Diagram Workspace.2.Select the Work On-line button from the toolbar. A confirmation message isdisplayed; select the Yes pushbutton to connect to the PLC.3.Select the Monitor Mode button or Run Mode button from the toolbar.Monitoring can only be accomplished in these PLC operating modes.4.Select the Toggle PLC Monitoring button from the toolbar to start monitoringpower flow in the Ladder program.5.Select the Toggle PLC Monitoring button from the toolbar to stop monitoring.The PLC Monitoring function can be activated whilst in Mnemonics view.Pause MonitoringPause Monitoring is an online function that allows the normal monitoring display to be frozen at a pointin time, so that the logic of a program can be examined.
The pause can be triggered either manually orby a trigger condition.Revision 2.0Page 85CHAPTER 4 – ReferenceOMRONUse the following procedure to Pause monitoring a program.1, 2, 3…1.To enable pause monitoring, first select 'PLC Monitoring', so that monitoring isworking normally.2.Select a range of rungs that are of interest to monitor. This is necessary to allow themonitoring to be as fast as possible (the less values to monitor, the faster the datacan be obtained through communication with the PLC).3.Select the 'Pause Upon Trigger' command. This will present a dialogue allowingthe choice of trigger. Select either Manually or Triggered.Triggered: When the pause is triggered, a trigger condition is necessary.
Atrigger condition happens when the contents of an address reaches a certainvalue or makes a transition.It is possible to enter an address or a symbol name into the dialog, or browse fora symbol. Select the type of condition, supplying the value or transition type.When the pause monitoring function is operating, the display outside the selectedregion is dimmed, and monitoring only occurs within the selected region.Manually: This option means that monitoring will only be paused when told todo so. Select ‘Manually’ in the dialog and press ‘OK’. Monitoring then begins.
Tooperate the pause, wait until the monitoring screen is interesting, then select 'Pause'from the toolbar or from the PLC/Monitor menu. The monitoring function ispaused (the 'Pause' button on the toolbar is shown as down). To resumemonitoring, press the 'Pause' button again, and monitoring will resume, waiting foranother trigger.If a condition is being used for pausing, the monitoring display will continue until the condition has beenmet, at which point the 'Pause' button will be shown as down and monitoring freezes. To resumemonitoring, and wait for another instance of the condition, press 'Pause' again. Note that it is possibleto manually pause the monitoring by pressing 'Pause' even when using the ‘Triggered’ type of condition.To resume full monitoring, press the 'Pause Upon Trigger' button again, so that it is shown as out.PLC Cycle TimeThe PLC Cycle Time dialogue allows the PLC’s cycle times to be measured.
The PLC Cycle Time isalways displayed in the status bar.Page 86Revision 2.0OMRONCHAPTER 4 – ReferenceFor certain CV-series PLCs and CS1-series PLCs, if the ladder program contains Mark instructions, thePLC Cycle Time dialogue permits the measurement between the Start Mark and Stop Mark instructions.Use the following procedure to measure PLC cycle time.1, 2, 3…1.Select the PLC object in the project workspace.2.Select the Work On-line button from the toolbar. A confirmation message isdisplayed; select the Yes pushbutton to connect to the PLC.3.Open the cycle time dialog using the Cycle Time command in the PLC/Edit menu.The mean, minimum and maximum cycle time is shown in the Cycle Time fields.Select the Reset button to empty the PLC’s history buffer for these fields – thevalues will then be calculated and updated by the PLC using the latest values only.4.To measure the time to execute between two points in a program, enter the Startmark and stop mark numbers in the Start Mark # field and Stop Mark # field.
Notethat only certain PLCs have this feature. Also, MARK instructions must have beenplaced in the program/s and downloaded to the PLC. Select the Measurepushbutton – a measurement will then be taken and displayed in the Time field.Select the Abort pushbutton to cancel the measurement.5.Select the Close pushbutton to complete the operation.PLC Program AssignmentsThe Project PLC Program Assignments dialogue lists all tasks and their associated program names forthe selected PLC in the project. The list can then be printed.Revision 2.0Page 87CHAPTER 4 – ReferenceOMRONUse the following procedure to print PLC program assignments.1, 2, 3…1.Select the PLC object in the project workspace.2.Select Program Assignments from the PLC menu.3.Select the Print pushbutton to print the program assignments.4.Select the Close pushbutton.PLC InformationThe PLC Information dialogue displays information associated with the PLC device, including:♦♦♦♦♦♦♦♦Device type;Program memory (useable/size and whether protected);Memory type;File/memory card presence;Data memory size;Extension memory size;IO memory size;Timers/counters memory size.Note: Different PLC devices are capable of reporting different types of information.To access the PLC Information dialogue, select Information from the PLC menu.
Select the Closepushbutton to exit the PLC Information dialogue.Setting the PLC’s ClockWhen a PLC is on-line, its clock (if it has one) can be synchronised to the computer clock or the PLCclock can be set to a specific time.Page 88Revision 2.0OMRONCHAPTER 4 – ReferenceUse the following procedure to set the PLC’s clock.1, 2, 3…1.Select the PLC object in the project workspace to display the Ladder program inthe Diagram Workspace.2.Select the Work On-line button from the toolbar. A confirmation message isdisplayed; select the Yes pushbutton to connect to the PLC.3.If the PLC has a clock, the project workspace will show a PLC Clock icon.Double-click this to show the CX-Server clock dialogue.Refer to the CX-Server User Manual for further information on setting the PLC clock.Applying a Password to the PLCThe C-series PLCs and CS1-series PLCs support use of a single password to protect an individual PLC.The CV-series PLC supports two passwords that provide either system (overall) or partial protection(protecting specific programs on a PLC).
For password information relating to a specific PLC, refer tothat PLC’s user manual.When enabled, the password is required every time the protected program or PLC is accessed.The password can be released if necessary, for example, if a new PLC is being created and details needto be uploaded from a protected PLC/program to be copied into the new PLC.Use the following procedure to apply a password to the PLC.
This facility is only available when thePLC is on-line.1, 2, 3…1.Select the PLC object in the project workspace.2.Select the Show Properties button from the toolbar. The PLC Properties dialogueis displayed.3.Display the Protection tab of the PLC Properties dialogue.4.Enter a password; this has a maximum of eight characters for CS1-series PLCs orfour hexadecimal digits for C-series.5.To release the password, delete the entry from this field.6.Select the Close button from the title bar to close the dialogue.Select the Set Password button from the toolbar to enable protection for the PLC. TheSet Program Protection dialogue is displayed. Select the items to apply protection toin the Items to Set field. Select the OK pushbutton to accept the settings or select theCancel pushbutton to abort the operation.Select the Release Password button from the toolbar to disable protection for the PLC.The Release Program Protection dialogue is displayed. Select the items to releaseprotection to in the Items to Release field.
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