
B-63753EN/01 PMC PROGRAMMING4.OUTLINE OF HANDY MACHINE OPERATOR'S PANEL FUNCTIONS
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4.4 CHARACTER DISPLAY ON LCD
2 lines of 16 characters data can be displayed on LCD by PMC ladder
program.
Not only fixed strings data but also a data containing a binary data
can be displayed. (Numeric variable display - Displaying after
converting binary value to strings data)
Procedure of LCD display is shown as follows.
1. Selecting the line
(SELLN)
Upper line
Lower line
2. Writing new data
Data for upper line Data for lower line
3. Requesting to display new data
(REQDSP)
4. Acknowledgement
(ACKLCD)
(a) PMC confirms display acknowledgement (ACKLCD) is reset.
(b) PMC selects the line(SELLN) and writes new data for selected line.
(c) PMC sets display request (REQDSP) and waits for acknowledgement (ACKLCD).
(d) HMOP sets display acknowledgement (ACKLCD). Moreover, when the LCD display error occurs, the
cause is set in LCDER0-2.
(e) PMC resets display request (REQDSP) and can clear data for selected line.
(f) HMOP resets display acknowledgement (ACKLCD)
(b)
(f)
(e)
(d)
(b)
(f)
(e)
(d)
1
11
1
0
1
0
1
0
1
0
(a)
(c)
(a)
(c)