3-1
Section
DIP Switch Setting
15
Trigger Input
The ID Controller is provided with a trigger input that informs the Controller when
to start processing the DC. After receiving a command from the host controller,
the ID Controller waits until the conditions of this trigger input are satisfied, and
then starts communications with the DC.
Command
reception
Trigger
input active
Response processing
Command processing
N
N
Y
Y
Note Even if there are changes to the trigger input status while the ID Con-
troller is processing a command, processing is not suspended.
The condition of the trigger input can be specified to be L level (OFF) or H level
(ON) by using a DIP switch.
(a) (L level active)
(c) (Leading edge active)
(d) (Trailing edge active)
(b) (H level active)
Command reception
Command processing starts
Trigger input wait
When the auto command is used, the ID Controller waits for the DC approach
after the trigger input has become active. Consequently, the Controller does not
perform Read/Write processing even if a DC approaches before the trigger input
becomes active.
Trigger input wait*
Waits until DC
approaches
DC communica-
tions processing
Auto command
reception
Trigger input
active
DC approaches
Response
transmission
*The ID Controller does not perform processing even when a DC approaches in
the trigger input wait state.
Note When the trigger input is not used, set the trigger condition to L level, and open
the TRG terminal (set pins 1 and 2 of DIP switch 2 to the OFF positions).
