Hioki ST5520-01 - External Control (EXT.I;O)

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External Control (EXT.I/O)
The EXT.I/O terminal on the rear panel of the instrument supports external control by
providing output of the TEST and comparator judgment signals, and accepting input
of the START and STOP signals.
All signals are isolated with photocouplers. (The input/output common terminals are
shared.) The input circuit can be switched to accommodate either current sink output
(NPN) or current source output (PNP) by the internal settings of the instrument.
Check the input/output ratings and internal circuit structure, understand the safety
precautions for connecting a control system, and use accordingly.
Signal output or input
Check the controller input and output specications.
Set the EXT.I/O mode switch (NPN/PNP) on the instrument.
(Operate the switch after the instrument power is turned off.)
Connect the EXT.I/O terminal to the signal output and input.
Set the instrument.
7 External Control (EXT.I/O)
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