Disp (Display) - IDEC MICROSmart FC6A Series Ladder Programming Manual

12: D I
ISPLAY NSTRUCTIONS

DISP (Display)

DISP
BCD4
*****
Quantity of digits:
1 to 5 (decimal)
1 to 4 (hex)
Conversion:
BCD or BIN
Note: Always use transistor output to display data using the DISP instruction.
Valid Devices
Device
S1 (Source 1)
Q (Output)
For the valid device address range, see "Device Addresses" on page 2-1.
*1 When T (timer) or C (counter) is used as S1, the timer/counter current value (TC or CC) is read out.
*2 Special internal relays cannot be designated as Q.
Conversion
BCD:To connect BCD (decimal) display units
BIN:To connect BIN (hexadecimal) display units
*1
Latch Phase and Data Phase
Select the latch and data phases to match the phases of the display units in consideration of sink or source output of the output
module.
*1 The LAT (latch phase) and DAT (data phase) settings will differ depending on the 7-segment display sink output specification and source output
specification. Configure these settings according to the specifications of the 7-segment display.
Specify the data to display on the 7-segment display with S1 (the display data). Specify the output for the display data with Q.
Starting from the device specified with Q, the specified data (4 points + number of digits) is sequentially allocated by the display
data and the number of display digits.
For example, if the number of display digits is 4 digits and the display data output is set to Q0, Q0 to Q7 are allocated (Q0 to Q3
are allocated to the data signal to the display, Q4 to Q7 are allocated to the digit selection signal).
Notes:
• A maximum of 8 DISP instructions can be entered in a user program.
• The displayable range is 0 to 65535 (FFFFh).
• Displaying one digit of data requires 3 scan times after the input to the DISP instruction is turned on. Keep the input to the DISP instruction
for the period of time shown below to process all digits of the display data.
Display Processing Time
3 scan times × Quantity of digits
When the scan time is less than 2 ms, the data cannot be displayed correctly. When the scan time is too short to ensure normal display, set a
value of 3 or more (in ms) to data register D8022 (constant scan time preset value).
12-20
S1 Q LAT DAT
L L
*****
Data phase:
Low or High
Latch phase:
Low or High
Function
Data to display
Display data output
*1
FC6A S MICROS
ERIES MART
Displays the specified data on a 7-segment display.
When the input is on, the data specified by S1 is displayed
on the 7-segment display.
Display data can be 0 through 65535 (FFFFh).
I Q M R
— — — —
*2
— X X —
L P M
ADDER ROGRAMMING ANUAL
T C D P Constant
*1 *1
X X X —
— — — —
FC9Y-B1726
Repeat
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