27.8.1 Procedure - Saving Video Output as Still Images

Turn ON the screen capture address on the PLC side to save the specified image from channel 1 as a still image on a CF card in JPEG format. Other than the CF card, you can also save to a USB storage device or FTP server.

  1. In [System Settings], select [Image Unit].

    • If the [System Settings] tab is not displayed in the workspace, on the [View (V)] menu, point to [Workspace (W)], and then click [System Settings (S)].

  2. In the [Image Input Module Settings], confirm whether [VM Unit 2000] or [VM Unit 3000] is selected.
    Under [Video Control Start Address], select [Enable]. 42 Words from the setup address control the video display.

  3. Specify the video control start address.

    • The settings for the [Video Control Start Address] range from LS20 to LS1989 and LS2096 to LS8957. If values outside this range are specified, none of the VM functions will operate.

  4. From [Video Input], select [NTSC]. (If the video signal is PAL, select [PAL].)

  5. On the [Common Settings (R)] menu, select [Image Unit Window (U)] or click to open the following dialog box. Select [New] and then specify [Number] and [Comment]. (For example, Number "1", Comment "Image Unit Window")

  6. The video window [VM1] appears.

  7. Adjust the [Image Unit Window] size.
    To reduce the Window Screens, first reduce the display area (blue parts), then drag the mark on the four corners to adjust the size. To enlarge, expand the window size and adjust the display area to fit the window size.

  8. Double-click the blue display area. The following dialog box appears. In [Video Layout] click .

  9. In the [Display] area, click , and under the [Channel], select the camera image to be displayed in this upper left area (for example, Channel 0).
    Also select the size of the image (for example, 1/4).
    Similarly, select the channels and display sizes for the images displayed in the upper right, lower left, and lower right areas.

    • If the selected [Display Size] is larger than the display unit or the blue display area, the entire image will not display. You can use [Video Display position] on the [Custom Settings] tab to specify which part of the input image to be displayed. If you want to display the entire image, set the [Display Size] smaller than the size of the blue display area.

    • The display size varies depending on a type of display unit and display mode.
      27.12.2 Display Size - RGB Unit/DVI Unit

  10. Specify the values for the space between the screens. (For example, Horizontal 10, Vertical 10)
    Click [OK] to finish and exit the [Image Unit Window] settings.

  11. Open the [Snapshot] tab, and select the [Video capture] check box.

  12. In the [Channel] list, select [Channel 0].

    • You can capture screens for one channel only. You can capture screens only for video images.

  13. Under [JPG File Number], select [Direct], and specify the JPEG file number for the file you are creating.

    • Other than the CF card, you can also save to a USB storage device or FTP server.
      In the system settings window, select [Display Unit] and click the [Mode] tab. From [Screen Capture], select the [Capture Action] check box. When you select the files saved in the FTP server, this setting is disabled.

  14. Click [OK] to finish and exit the [Image Unit Window] settings.

  15. On the [Parts (P)] menu, select [Image Unit Display (V)] or click to place the [Image Unit Display] on the screen.

  16. Double-click the [Image Unit Display]. The following dialog box appears.
    In the [Video Layout] list, select [Always ON]. In the [Video Number] list, specify the video display number (for example, 1) and click [OK].

    • Click the icon on the [Image Unit Display] to display the corresponding video screen. This feature is useful for checking the video settings because it makes screen changes easy.

Operating Procedure

  1. Turn on bit 4 of the [Video Control Start Address] (LS20) specified in step 3.

  2. The image in channel 0 is captured and saved in the "CAPTURE" folder on the CF card using the file name "CP00001.JPG."