IDEC MICROSmart FC6A Series Ladder Programming Manual page 448

20: D / T
UAL EACHING
Valid Devices
Device
S1 (Source 1)
S2 (Source 2)
D1 (Destination 1)
D2 (Destination 2)
For valid device address ranges, see "Device Addresses" on page 2-1.
Special internal relays cannot be designated as D1.
Destination device D2 (system work area) uses 2 data registers starting with the device designated as D2. The two data registers are used for a
system work area. Do not use these data registers for destinations of other advanced instructions, and do not change values of these data registers
using the monitor function on WindLDR. If the data in these data registers are changed, the dual timer does not operate correctly.
The dual timer instructions cannot be used in an interrupt program. If used, a user program execution error will result, turning on special internal
relay M8004 and the ERR LED on the FC6A Series MICROSmart.
When a user program execution error occurs, the execution of the instruction is canceled and the next instruction is executed. The data in D1
(destination 1) is unchanged. For details about the user program execution errors, see "User Program Execution Errors" on page 3-10.
Examples: DTML, DTIM, DTMH, DTMS
DTML
I0
DTIM
DTMH
DTMS
250
ON
I0
OFF
ON
M10
OFF
ON
M20
OFF
ON
M30
OFF
ON
M40
OFF
250 ms
Instruction Increments
DTML
DTIM 100 ms
DTMH 10 ms
DTMS 1 ms
For the timer accuracy of timer instructions, see "TML, TIM, TMH, and TMS (Timer)" on page 4-7.
20-2
T I
IMER NSTRUCTIONS
Function
ON duration
OFF duration
Dual timer output
System work area
S1 S2 D1
2 1 M10 D100
S1 S2 D1
10 5 M20 D200
S1 S2 D1
50 25 M30 D300
S1 S2 D1
125 M40 D400
2 s 1 s
1 s 0.5 s
500 ms
125 ms
S1
1 s 2
10
50
250
FC6A S MICROS
ERIES
While input I0 is on, four dual timer instructions turn on and off the
D2
destination devices according to the on and off durations assigned by source
devices S1 and S2.
D2
D2
D2
250 ms
ON Duration
1 s × 2 = 2 s
100 ms × 10 = 1 s
10 ms × 50 = 500 ms
1 ms × 250 = 250 ms
L P
MART ADDER ROGRAMMING
I Q M R T
— — — — —
— — — — —
— X X —
— — — — —
S2
1
5 100 ms × 5 = 0.5 s
25 10 ms × 25 = 250 ms
125 1 ms × 125 = 125 ms
M FC9Y-B1726
ANUAL
C D P Constant
— X — 0-65,535
— X — 0-65,535
— — — —
— X — —
OFF Duration
1 s × 1 = 1 s