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V8/TS2060 series Operation Troubles HKFAQ000131

date: 2021/8/31

The screen is not switched according to the command from the PLC (external).

 The causes are listed below.

<Causes>

  1. The screen number to display is not specified in read area "n + 2".
  2. The specified screen number is the same as the previous screen number.

 

<Solutions>

  1. Check the value specified in read area "n + 2".
    The value must be specified in the data format (DEC/BCD) as set in the screen data.
    The set data format can be viewed in the following location.

      * For details about how to check Read area, click here.

    V8/TS series
    Setting location: V-SFT-6 editor [System Setting] → [Hardware Setting] →
                              [PLCx Properties]→ [Communication Setting] → [Code]

     

    V7 series
    Setting location: V-SFT-5 editor [System Setting] → [PLC Communication] →
                              [Communication Parameter] → [Detail] → [Code]

     

  2. Bit 14 (screen forced switching) of read area "n + 1" must be OFF → ON (leading edge).

Example: Read area "n + 2" (D2)

Step a: Change to screen No. 5 according to read area "n + 2"
Step b: Change to screen No. 2 with an internal switch
Step c: Change to the same screen number as step a (screen No. 5) according to read area "n + 2"

In this case, however, the same value is stored in read area "n + 2" so the command is not valid.
In such a case, it is possible to forcibly switch the screen to the screen number contained in read area "n + 2" at the leading edge [0 → 1] of bit 14 of read area "n + 1" (D1).

V8series|The screen is not switched according to the command from the PLC (external).

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