ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 86)

IF[N] - Digital Input Filter
Purpose:
Filters the drive digital inputs in order to overcome switch bouncing. IF[N] defines a
time period in milliseconds. Input pulses of shorter duration than IF[N] are rejected.
Pulses longer than IF[N] in milliseconds are sensed.
Each index entry [1 - 10] refers to a digital input [1 - 10] respectively. The input
filtering is accomplished by the software. For this reason, in order to ensure that an
input pulse is sensed, its length must be IF[N]+WS[4], where WS[4] is the SimplIQ for
Steppers sampling time.
Example:
If the SimplIQ for Steppers scan period is 360 microseconds and IF[1]=1, the minimum
stable time
for an input change for a sure capture is 1 msec + 360 usec = 1.36 msec.
Attributes: Type: Parameter, Float
Source: Program, RS-232, CANopen
Restrictions: None
Default values:
0 (RS), Non-volatile
Range: [0…1000] msec
Index range: [1…10] … refer to the first note
Unit modes: All
Activation: Immediate
SimplIQ: Similar
Notes:
SimplIQ drives supports a different number of digital inputs. Accordingly, the
index range may differ between drives. Please consult the drive’s Installation
Guide for information about its digital inputs.
If input 5 or 6 is used as Home input, the corresponding parameter — IF[5] or
IF[6]— does not apply. Parameter EF[1] or EF[2] is used instead.
The IF[N] commands can also be applied in simulation mode – refer to the IL[N]
command.
SimplIQ for Steppers Command Reference Manual Alphabetical Listing
MAN-STECR (Ver. 1.1)
78