Hioki RM3545, Instruction Manual, Page: 183 / 364

175
10
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 10
Check the controller’s I/O specifications.
Set the instrument’s NPN/PNP switch. (p.176)
Connect the instrument’s EXT I/O connector to the controller. (p.177)
Make instrument settings. (p.206)
Signal input/output