B&B Electronics WOP-2121V-N4AE - Manual - Manual (Page 241)

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PM Designer Operation Manual
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CHAPTER 6 LAMPS
6.3. Displaying Text Information Using Message Displays
6.3.1. Basic Operations
You can use a variable to select and display a predefined message with a message display.
提示: 訊息顯示和指示燈的主要差別處是：訊息顯示的內容只有文字，不能用圖檔，而指示燈內容可用文字和圖檔。
A message display can have up to 256 states. Each state can have a predefined message. The maximum number of
states that a message display can have is determined by the state type and the data type of the monitored variable. The
following table shows the maximum in each case.
Type of Variable Maximum
Bit Bit 2
16-bit 256 Value
32-bit 256
16-bit 17
State
Type
LSB
32-bit 33
You need to specify the number of states for a message display and the number must not exceed the allowed maximum.
You can set the text (message) for each state. At runtime, a message display shows the message corresponding to the
state of the monitored variable. The state of the monitored variable is determined by the state type and value of the
variable.
訊息顯示有二種:
1. 觸控屏讀取 PLC 之接點狀態或暫存器值，自動依據各對應狀態規劃物件內容直接顯示在觸控屏幕上。狀態數最多可達 256
個(數值)或 16 個(最低位 LSB)或 2 個(位)。
2. 觸控屏讀取 PLC 之接點狀態或暫存器值，自動依據各對應狀態規劃物件內容逐一顯示在觸控屏幕上，文字顯示效果為文
字依序由右至左移動顯示，設計時可控制每次移動的字數與速度。
6.3.2. Operation Options
The following operation option can be added to a message display. You need to select and set this option in the Message
Display dialog box.
Options Description
Marquee The displayed message scrolls automatically in the specified direction. When the displayed
message is not long enough to cover the whole display area, the message is duplicated to fill
the uncovered area in sequence.
Visibility Control The object can be shown or hidden either by a specified bit or by the current user level. Select
and set this option in the Visibility page.