34
6. DIGITAL I/O
The rear panel Digital I/O terminal outputs the result of Compare measurement to external devices.
6-1. Digital I/O Terminal Configuration
Background The digital I/O terminal outputs the result of Compare measurement to control external devices. By
providing separate VCC for the terminal, the outputs can also be used as power source for TTL and
CMOS logics.
Pin
assignment
Connector type: DB-9 female
1 2 3 4 5
6 7 8 9
FAIL Out
HIGH Limit FAIL Out
LOW Limit FAIL Out
EOM Out
VCC Out
NC
Digital (Chassis) Ground
External Trigger In
PASS Out
Pin1 VCC output, 5V. Serves as the power source for the external device/logic.
Pin2 NC (No Connection).
Pin3 Digital (Chassis) Ground.
Pin4 External Trigger Input. Accepts external trigger signal. For using external signals.
Pin5 PASS signal Output. Activates when the compare result is PASS. Active low.
Pin6 FAIL signal Output. Activates when the compare result is FAIL. Active low.
Pin7 HIGH Limit FAIL signal Output. Activates when the compare result is FAIL due to violating the
HIGH Limit. Active low.
Pin8 LOW Limit FAIL signal Output. Activates when the compare result is FAIL due to violating the
LOW Limit. Active low.
Pin9 EOM (End Of Measurement) signal Output. Activates when compare measurement is over.
Active High.
Pulse width
≒
10ms(Display ON) / 3ms(Display OFF)
Vo
Pin 3
Pin 5
～
9
Pin 1
R(min:500
Ω
)
Digital I/O Terminal wiring diagram
5V
GND
P
P
P
F
F
H
L
HIGH limit
LO limit
Pin 5 PASS output
Pin 6 FAIL output
Pin 7 HIGH limit output
Pin 8 LO limit output
