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SEFELEC1500M Instructions
120
V1.06
12.5. MEASUREMENT-DISCHARGE CYCLE
NOTE
The PLC function (Programmable Logic Controller) must be select-
ed in the configuration menu (INTERFACE : PLC).
To take a measurement
(
See diagram no. 2)
Activate the
CTRLIN
signal (logic High).
The PLC must specify the measurement function on the
TYPE
input.
The PLC must select a parameter number which will be binary encoded on inputs
N0
to
N7
,
N0
being the least significant bit and
N7
being the most significant bit.
Set the
MES
_
DCH
signal to logic high to start the measurement. Note: the state of
the inputs
CTRLIN
,
TYPE
,
N0 to
N7
are taken into account only on a rising front of
the
MES_DCH
signal. This signal must be at logic high during the measurement.
As soon as the first measurement is taken, the device sends a
CTRLOUT
signal that
remains stable until validation (by a rising front of the
MES_DCH
signal) of the setting
to logic low of the
CTRLIN
signal. Other signals can appear according to the unfold-
ing of the test: an error signal (
ERROR
), and end of test signal (
EOT
), and a signal
that indicates if the test is good or bad (
PLCPASS
or
PLCFAIL
). All of these signals
are active at logic high.
To switch to discharge, simply set the
MES_DCH
signal to a low level. To return control to
the device, delete the logic high on the
CTRLIN
signal, activate a logic high on
MES_DCH
,
and deactivate it (see diagram no. 1).
Diagram no. 1: Deactivation of the CTRLOUT signal