IDEC MICROSmart FC6A Series, User Manual

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FC6A S
ERIES
MICROS
MART
U
SER
’
S
M
ANUAL
FC9Y-B1722 5-35
5: F
UNCTIONS AND
S
ETTINGS
Catch Input
The catch input function is used to receive short pulses from sensor outputs regardless of the scan time. Input pulses shorter than one scan time
can be received. When using catch input, the on/off status according to the status of the external inputs during one scan is stored in the special
internal relays (M8153 to M8157, M8160) that correspond to each external input group, and those signals can be used as input conditions.
The
Function Area Settings dialog box is used to designate inputs I0, I1, I3, I4, I6 and I7 as a catch input.
Normal input signals to input terminals are read when the END instruction is executed at the end of a scan.
Since these settings relate to the user program, the user program must be downloaded to the FC6A Series MICROSmart after
changing any of these settings.
Catch Input Specifications
Note: Input filter settings have no effect on the catch inputs. For the input filter function, see "Input Filter" on page 5-42.
External Inputs
External inputs on the FC6A Series MICROSmart can be switched between and used as normal inputs, high-speed counters, catch
inputs, interrupt inputs, and frequency measurements. To use catch inputs, specify the corresponding group as
Catch Input in
the Function Area Settings of WindLDR.
The status of external inputs that are assigned to catch inputs are stored in the following special internal relays by group (read-only).
All-in-One CPU module
*1 Can be used as a normal input.
*2 Read-only.
Plus CPU module
*1 Can be used as a normal input.
*2 Can be used only with the Plus 32-I/O type.
*3 Read-only.
Programming WindLDR
1. From the WindLDR menu bar, select Configuration > Input Configuration .
The Function Area Settings dialog box for Input Configuration appears.
Minimum Turn ON Pulse Width 5 µs
Minimum Turn OFF Pulse Width 5 µs
Group 1 2 3 4 5 6
External Input I2 I0 I1 I3 I4 I5 I6 I7
Catch Input —
*1
Yes Yes Yes Yes —
*1
Yes Yes
Special Internal Relay
*2
— M8153 M8154 M8155 M8156 — M8157 M8160
Group 1 2 3 4 5 6
External Input I2 I0 I1 I13
*2
I3 I4 I5 I6 I7
Catch Input —
*1
Yes Yes —
*1
Yes Yes —
*1
Yes Yes
Special Internal Relay
*3
— M8153 M8154 — M8155 M8156 — M8157 M8160
Catch Input Rising/Falling
Edge Selection
Catch Input Rising Edge
Catch Input Falling Edge