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5.9 Wiring up event channels
Any or all of the eight event inputs on the
‘signal’ connector (15-way male
D) may be connected (via a contact or signal source) to one of the
common ground pins, as indicated in the following diagram: -
8 7 6 5
13
9
individual event inputs
common ground
4
or
3 2 1
If any of the connected event channels change state, then this will
constitute an event.
The above diagram shows all events being monitored using contact
closures, but events may also be monitored using changes in voltage
levels (see 0). 1000 Series loggers with additional event channels will
have a 10 way terminal block. Inputs may be connected via a contact to
one of the common ground pins, as indicated in the following diagram: -
individual event inputs
common
ground
8 GND
6 7
5
4
3
2
1
In both cases, if the maximum voltage could exceed 5V, then the addition
of a 1K resistor in series with the input will allow voltages up to 6V to be
used.
