Hioki 3158 - Chapter 6 External Interface; 6.1 External I;O Terminal

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6.1 External I/O Terminal
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A
When
EXT-E
______
of the external I/O terminal is at LO, EXT lights up when the
remote-control box is active.
NOTE
Chapter 6
External Interface
6.1 External I/O Terminal
Both output signals regarding the status of the 3158 (e.g., READY state) and input
signals to the
START
key and the
STOP
key are controlled through the external
I/O terminal, located at the back of the unit.
An inter-lock terminal is provided to ensure safety. All signal lines are insulated
internally with a photocoupler. A power voltage of 15 V (0.1 A), insulated from the
internal supply, is output from the external I/O terminal. This voltage can be used as
external power. If the unit power capacity is insufficient, add an external power
supply.
When EXT-E
________
of the external I/O terminal is at LO, the unit
START
key is
disabled. If you use the remote control box, the START signal for the external I/O
terminal is disabled. The priority hierarchy for the
START
keys is given below.
When a
START
key with a higher priority is in use, lower-priority keys are
disabled:Priority: Remote control box > External I/O > Front panel of the unit.