The solutions vary depending on the screen data settings.
Check the following settings.

Setting location:
V-SFT editor [System Setting] → [Unit Setting] → [SRAM/Clock] → [Use SRAM Calendar]

Checked ..... Clock built in the V series used
Unchecked ..... Clock built in the PLC used

[[Use SRAM Calendar] checked]

<Causes>

1. No battery is set in MONITOUCH.
2. The battery is flat.
3. The clock built in the V series is not set to the correct date and time.

<Solutions>

1. Check that a battery is set in the battery holder on the backside of V series.
2. If the battery is flat, the message "Replace the battery" is displayed at the lower right of the screen in Local mode. Replace the battery with a new one.
3. There are two methods for adjusting the clock of the V series. Follow the steps below.

• Method 1: Adjusting in Local mode
  There are two methods for adjusting the clock of the V series.
  
  
• Method 2: Adjustment using a macro command
  It is necessary to create a clock correction screen.
  Macro command to use: "SET_SYS_CLND"
For more information on macro commands, refer to the V10/V9/X1 Series Macro Reference Manual.

[[Use SRAM Calendar] unchecked]
The clock built in the PLC is used.

<Causes>

1. No battery is set in the PLC.
2. The clock built in the PLC is not set to the correct date and time.

<Solutions>

1. Set batteries in the PLC.
2. There are two methods for setting the date and time.
   
   
• Method 1: Correct using the PLC programming tool and [Calendar Read Device]
  The PLC calendar memory can be corrected using the PLC programming tool.(For correction on the PLC, refer to the relevant PLC manual.)
  Calendar data is read into the V series at the leading edge (0 -> 1) of the [Calendar Read Device]*.
  * Set the [Calendar Read Device] using V-SFT-6.
  [Setting location]
  [System Setting] -> [Hardware Setting] -> [Control Area] -> [Calendar Read Device]
  
  
• Method 2: Adjustment using a macro command
  The PLC calendar can be corrected using macro command "SET_CLND".
  Example: To correct 4/1/2014 10:40:00 to 4/20/2014 12:00:00
  
  

(1) Create a calendar setting screen.

Place the following parts on the screen.
・Keypad
・Numerical data display part
　[Function:Entry Target] ($u0 to $u5)
・Switch ON macro "SET_CLND"
・Time display or calendar

(2) Input year, month, day, time, hour, minute, second in order using the keypad, and press the switch to execute the SET_CLND macro. The PLC calendar is rewritten.

Set 4/20/2014 12:00:00.
　Year: $u0 = 2014
　Month: $u1 = 4
　Day: $u2 = 20
　Hour: $u3 = 12
　Minute: $u4 = 0
　Second: $u5 = 0

The PLC calendar is read into the V series and the V series calendar is also re-written.

* The following macro commands are used to correct the calendar data in PLC2 to PLC8.

・PLC_CLND ... PLC calendar write
・SET_SYS_CLND ... V series calendar write

For more information, refer to the V9 Series Macro Reference Manual.