Hioki RM3544 - Chapter 8 External Control (EXT I;O)

89
8
The EXT I/O connector on the rear of the instrument supports external control by providing
output of the EOM and comparator judgment signals, and accepting input of TRIG and
KEY_LOCK signals. All signals are isolated from the measurement circuit and ground (I/O
common pins are shared). Input circuit can be switched to accommodate either current sink
output (NPN) or current source output (PNP).
Confirm input and output ratings, understand the safety precautions for connecting a control
system, and use accordingly.
External Control
(EXT I/O)
Chapter 8
Check the controller’s I/O specifications.
Set the instrument’s NPN/PNP switch. (p.90)
Connect the instrument’s EXT I/O connector to the controller. (p.91)
Make instrument settings. (p. 108)
Signal input/output