NT21_Setup Manual (V068-E1-1) (986757), страница 26
Текст из файла (страница 26)
The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch. The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-8 Setting the Screen Saver TimerThe NT21 has a screen saver function to extend the life of the backlight and protect the LCD screen from screen-burn by having an image displayed too long.
Ifno operations are performed after a set time, the screen display will be turnedOFF automatically and a character string will be displayed at random positionson the screen.The Screen Saver Movement setting determines whether or not the characterstring will be displayed while the screen display is OFF.• If Display is selected, the character string stored in character string memorytable entry number 0 will be displayed, and the backlight status will not change.• If Display erase is selected, the character string will not be displayed, and thebacklight status will turn OFF.The default (factory) setting is Display erase.The Screen Saver Start up Time setting determines the time interval before thescreen saver function operates.The setting range is 0 to 255 minutes.
The default (factory) setting is 10 minutes.If 000 is set, the screen saver function does not operate.The screen saver can be canceled, and former screen redisplayed, by any of thefollowing operations.• Touching any part of the touch panel• Screen switching due to PT Status Control Area operations• Screen switching due to bit memory table operations• Execution of any of the following PT status control bit operations:• Changing the backlight mode• Screen display (change from OFF to ON)Reference: The screen saver function operates only when the NT21 is in RUN mode.
Thescreen saver function will not start in System Menu or System Installer mode.138SectionSystem Settings6-9Set the screen saver operation with the second Memory Switch Setting Screen(2/4) as shown below. (Refer to 6-9-9 Memory Switch Setting Screens for detailson displaying the Screen.)Press Screen Saver Movement to displayDisplay or Display erased.The setting option changes each time thetouch switch is pressed.Set a time in the input field to the right ofScreen Saver Start up Time.Each of the digits can be incremented ordecremented by pressing the associated +and – keys.To set other memory switches, select the relevant screen using the [ ] (nextscreen) or [ ] (previous screen) touch switch, then make the setting.• To confirm the settings and quit the memory switch setting screen, press theQuit touch switch. The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch.
The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-10 Setting the History Display MethodThe NT21 features the display history record function, which records the time atwhich screens are displayed during operation and the number of times they aredisplayed, and the alarm history record function, which continually monitors bitstatuses at the host and records the time when bits come ON and the number oftimes they come ON.The Hist. Disp. Method setting determines whether — when these record dataare displayed in sort by occurrence — the records are displayed in a progressionfrom newest to oldest or from oldest to newest.• From Old Data:The records are displayed in sequence from the oldest to newest.• From New Data:The records are displayed in sequence from the newest to oldest.The default (factory) setting is From New Data.Reference:S Install an optional battery in the NT21 when using the display history recordfunction or the alarm history record function.S If a battery is installed, the contents of the history record will be retained evenwhen the NT21 is turned OFF, but the data will be lost if the battery fails and theNT21 is turned OFF.S For details on the display history record function and the alarm history recordfunction, refer to 2-15-1 Display History Record Function and 2-15-2 AlarmHistory Record Function in the Reference Manual.139SectionSystem Settings6-9Set the history display method with the second Memory Switch Setting Screen(2/4) as shown below.
(Refer to 6-9-11 Memory Switch Setting Screens for details on displaying the Screen.)Press Hist. Disp. Method to display the required display order.The setting option changes each time thetouch switch is pressed.To set other memory switches, select the relevant screen using the [ ] (nextscreen) or [ ] (previous screen) touch switch, then make the setting.• To confirm the settings and quit the memory switch setting screen, press theQuit touch switch. The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch. The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-12 Setting the Resume Function (Battery Required)The NT21 has a function to retain the contents of the memory tables even whenthe power to the NT21 is OFF and write back them to the host when the power isturned ON.
The optional battery must be installed to use the resume function.If the resume function is OFF, the memory tables are initialized to these initialvalues on switching to the RUN mode. If the resume function is ON, these are notinitialized and are kept the battery-backed up contents.When the memory table is initialized, its contents are reset to the initial state thatis set by the NT Support Tool.When the system is started up the next time, the screen is displayed using theprevious contents of the memory table.• ON:The resume function is used.• OFF:The resume function is not used.The default (factory) setting is OFF.Reference:S The resume function is effective only when a battery is installed in the NT21.Install an optional battery if you plan to use the resume function.S If the battery fails, the memory table contents will be initialized even if the resume function is set to ON.S For details on the resume record function, refer to 2-15-3 Resume Function inthe Reference Manual.140SectionSystem Settings6-9Set the resume function with the second Memory Switch Setting Screen (2/4) asshown below.
(Refer to 6-9-13 Memory Switch Setting Screens for details on displaying the Screen.)Press Resume Function to display the required setting.The setting option changes each time thetouch switch is pressed.To set other memory switches, select the relevant screen using the [ ] (nextscreen) or [ ] (previous screen) touch switch, then make the setting.• To confirm the settings and quit the memory switch setting screen, press theQuit touch switch. The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch. The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-14 Setting the Automatic Reset FunctionThe NT21 has a function for ignoring communication errors and automaticallyreturning to the RUN mode when they occur.The Comm.
Auto-return setting determines whether the automatic reset function is effective or not.• ON:When a communication error occurs, the NT21 automatically returns to theRUN mode without displaying an error screen (the System Initializing screenmay be displayed).• OFF:When a communication error occurs, an error screen is displayed and operation stops. Pressing OK on the error screen returns the NT21 to the RUNmode.The default (factory) setting is OFF.Reference:S If a communication error occurs when OFF is set for Comm. Auto-return, theNT21 makes the number of attempts at communication with the host specifiedby the setting for the Retry Counts touch switch (page 142). If communicationcannot be re-established in any of these attempts, an error screen is displayed.S For details on communication errors, refer to 7-2-5 Communication Errors andTheir Remedies (page 181).141SectionSystem Settings6-9Set the automatic reset function with the third Memory Switch Setting Screen(3/4) as shown below.
(Refer to 6-9-15 Memory Switch Setting Screens for details on displaying the Screen.)Press Comm. Auto-return to display the required setting.The setting option changes each time thetouch switch is pressed.To set other memory switches, select the relevant screen using the [ ] (nextscreen) or [ ] (previous screen) touch switch, then make the setting.• To confirm the settings and quit the memory switch setting screen, press theQuit touch switch. The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch. The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-16 Setting the Time-out IntervalThe NT21 goes into the time-out error status if no response is received from thehost within a fixed time. The Time-out Interval setting specifies the time lapse atwhich time-out is judged to have occurred.The setting range is 0 to 10 seconds.
The default (factory) setting is 1 second.Reference: Whether or not an error screen is displayed when a time-out error occurs is determined by the setting for the Comm. Auto-return memory switch.Set the time-out interval with the third Memory Switch Setting Screen (3/4) asshown below. (Refer to 6-9-17 Memory Switch Setting Screens for details on displaying the Screen.)Press Time-out Interval to display the required time lapse.The setting option changes each time thetouch switch is pressed, according to the following sequence.01 02 03 .... 09 10 00 01 ....To set other memory switches, select the relevant screen using the [ ] (nextscreen) or [ ] (previous screen) touch switch, then make the setting.• To confirm the settings and quit the memory switch setting screen, press theQuit touch switch.
The settings made last will be set and the NT21 will return tothe MAINTENANCE MODE MENU screen.• To quit the memory switch setting screen without confirming the settings, pressthe Abort touch switch. The NT21 will return to the MAINTENANCE MODEMENU screen with the previous settings still in effect.6-9-18 Setting the Retry CountThe NT21 does not immediately display an error screen when a communicationerror occurs, but tries to re-establish communication. The Retry Counts setting142System SettingsSection6-9specifies the number of attempts to be made to re-establish communication. Ifcommunication cannot be recovered within this number of attempts, the following happens depending on the setting made for the Comm.
Auto-return memoryswitch (page 141).• Comm. Auto-return ON:Operation in the RUN mode is continued without displaying an error screen.Regardless of the setting made for Retry Counts, attempts to re-establishcommunication are repeated until normal communication is achieved.• Comm. Auto-return OFF:The RUN mode is ended and an error screen is displayed. On pressing theOK touch switch on the error screen, the screen displayed immediately before is redisplayed and attempts are made to re-establish communication.The System Menu can be displayed from the error screen by pressing anytwo of the four corners of the touch panel simultaneously.The setting range is 0 to 255 times. The default (factory) setting is 5 times.Reference: For details on communication errors, refer to 7-2-5 Communication Errors andTheir Remedies (page 181).Set the retry count with the third Memory Switch Setting Screen (3/4) as shownbelow.
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