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mode, and to ensure that TEST signal operation mode is in switch mode
(switch position to the left, open switch symbol).
4.5.2 Simple indicating circuit diagram of HANDLER PLC
NOTE:
1.
DB9-<1-9> is the output signal identification for HANDLER interface,
corresponding to the respective output.
2.
In the above diagram, the connection power supply current on DB9-5
is very small, it can only be connected to 24VDC voltage load with a
load current up to 10mA, such as LED indicators and signal relay coils.
3.
INTERLOCK signal is the online enable signal, the instrument can only
work properly when it is shorted. If disconnected, the instrument will
not allow to start the high voltage test.