For models supporting the Clock Update Settings, refer to the following.
1.5 Supported FeaturesThe display unit clock is updated periodically, or on a specified timing.
For models supporting the Clock Update Settings, refer to the following.1.5 Supported Features
When the specified device/PLC's communication scan is OFF, you cannot read the clock. You can use LS9550 to check the communication scan status.
When resetting or turning OFF one of the following display unit models, its clock is initialized. Use the clock update feature to automatically set the display unit clock.
GP-4201TM / GP-4301TM
GP-4100 Series (Monochrome Model)
GP-4100 Series (Color Model) without the RTC Battery Set (option)
Enable Clock Updates
You can set up the criteria that defines whether to read the device/PLC clock and update the display unit clock.
Depending on the device/PLC, you can set it up so that you automatically retrieve time data from the device/PLC. For devices/PLCs that support automatic clock updates, please refer to the following.5.2.1 Procedure - Adjusting the Time (When Using Clock Update Settings)
When using a device/PLC that does not support getting the time, select the [Customize] check box and select the address values to read as time data.
Get From Device
Select the device/PLC used for clock information.
Update Trigger
Select the timing for updating the clock from [Frequency], [Bit ON], or [Bit OFF].
Frequency
Specifies the frequency from 1 to 1440 minutes. Updates the clock at the specified frequency.
Bit ON / Bit OFF
Updates the clock when the bit address turns ON or OFF.
When using the [Frequency] option, and you use the System Data Area (LS0010), there is a maximum error of 1 second until the clock is updated.
When using [Frequency], the clock is updated on the following conditions, in addition to the defined frequency.
Until the clock update is complete, parts on the display unit will not operate.
Powering up the display unit
Going from OFFLINE mode to RUN mode
After transferring and returning to RUN mode
(When the display unit is not reset, such as automatic transfer)
Customize
When using a device/PLC that does not support getting the time, you can update the clock with the specified address values to read as time data.
Time Area Start Address
Specify the start address where clock data will be stored.
Read Area Size
Specify the number of words for storing clock data from 1 to 6.
Format
Define whether clock data is stored in single word units, or words are separated into High/Low units.
Word
In single word units, stores the year, month, day, hours, minutes, and seconds.
High/Low
In words divided into High/Low units, stores the year, month, day, hours, minutes, and seconds.
Data Type
Choose the data format of the stored clock data from [16 bit Dec], [16 Bit BCD], [32 bit Dec] or [32 Bit BCD].
When using [16 bit Dec] or [16 bit BCD] and the address specified in the [Time Area Start Address] field is 32 bits, no data is stored in the top 16 bits.
When using [32 bit Dec] or [32 bit BCD] and the address specified in the [Time Area Start Address] field is 16 bits, 2 words are used for each clock data.
Number of Words to Use
Displays the number of words used for clock updates, as defined in the [Read Area Size].
Word
Displays the addresses as defined in the [Time Area Start Address] and [Read Area Size] fields.
For each address, specify what is stored in the word, [Year], [Month], [Day], [Hours], [Minutes], or [Seconds]. Select [None] to store no data in the address.
When there is an error in getting data for the seconds, and data for the year, month, day, hours, and minutes is okay, the seconds is reset to zero. An error message displays if there is an error in getting the year, month, day, hours, or minutes.
When there is an invalid value for the year, month, day, hours, or minutes, the value is not stored and an error message displays. After the error message displays, if the next clock update produces a valid value the error message will clear.
Valid values are as follows.
Year: 0...99
Month: 1...12
Day: 1...31 (Top limit depends on the number of days in the month)
Hours: 0...23
Minutes: 0...59
Seconds: 0...59
Although the day of the week (stored in LS2054) is not updated using this feature, the value in the day of the week storage area (LS9310) is calculated when the date is updated.A.1.1.4 LS9000 Area (Direct Access Method)