IDEC FT1A Series User Manual

S MART AXIS P RO /L ITE U SER ' S M ANUAL FT9Y-B1378 5-43
5: S PECIAL F UNCTIONS
Forced I/O function
Inputs can be forced on/off regardless of the status of physical inputs, and outputs can be forced on/off regardless of the ladder
logic using the forced I/O function in WindLDR. The force input function can be used to monitor or online edit mode to test the
ladder logic without the need of wiring the input terminals or turning on the actual inputs. The force output function can be used
to turn on/off the outputs to the external devices.
Devices
All the inputs and outputs of the SmartAXIS can be forced on/off individually.
Forced I/O Status
Events of the SmartAXIS and effects on the forced I/O settings are shown below.
Note: Force function has no effect on high-speed counters, catch inputs, or interrupt inputs. The stop or reset input can be initiated using the force
function, but the force settings will be cleared as soon as the reset input is turned on.
Checking the Forced I/O Function Execution State
The state of the forced I/O function (running or stopped) can be checked with WindLDR, with the SmartAXIS module error status
LED (SmartAXIS Lite only), or with the RUN or STOP screen on the module's LCD (SmartAXIS Pro only). The forced I/O function
execution state while stopped cannot be checked with the module's power/run status LED. For the power/run status LED, see
"Product Specifications" on page 2-1.
• The forced I/O may cause unexpected operation of the SmartAXIS. Make sure of safety before forcing inputs or
outputs.
Caution
Type
Device Range
Inputs Outputs
12-I/O type I0 to I7 Q0 to Q3
24-I/O type I0 to I17, I40 to I75, I80 to I115, I120 to I155 Q0 to Q7, Q40 to Q61, Q80 to Q101, Q120 to Q141
40-I/O type I0 to I27, I40 to I75, I80 to I115, I120 to I155 Q0 to Q17, Q40 to Q61, Q80 to Q101, Q120 to Q141
48-I/O type I0 to I35, I40 to I75, I80 to I115, I120 to I155 Q0 to Q21, Q40 to Q61, Q80 to Q101, Q120 to Q141
Events Forced I/O Status
When the SmartAXIS starts running
The force settings are retained. The forced inputs and outputs are kept on/off
even after the SmartAXIS is stopped, regardless of the status of M8025
(maintain outputs while SmartAXIS is stopped).
When the SmartAXIS is stopped.
When the SmartAXIS is powered up
The force settings are retained, but the force is suspended. If the battery is
dead, the force settings are cleared.
When user program download is executed
The force settings are retained, and whether the force will be suspended or
not can be selected in the Download Program dialog box.
When Reset Input is turned on
The force settings are cleared.
When Clear All Devices is executed in the PLC Status dialog
box of WindLDR
When the system software download is executed

IDEC FT1A Series Specifications

General

Brand	IDEC
Model	FT1A Series
Category	Controller
Language	English