IDEC SmartRelay functions
110 IDEC SmartRelay Manual
4.1 Constants and connectors - Co
Constants and connectors (= Co) represent inputs, outputs,
memory markers and constant voltage levels (constants).
Inputs:
1) Digita
l inputs
Digital inputs are identified with an I.
Th
e number of the
digital inputs (I1, I2, ...) corresponds to the number of the
input connectors of the IDEC SmartRelay base module and
of the connected digital modules, in the order of their
installation. The fast digital inputs I3, I4, I5, and I6 of the
IDEC SmartRelay versions FL1E-H12SND, FL1E-H12RCE
and FL1E-B12RCE can be used as fast counters.
2) Analog inputs
The IDEC SmartRelay versions FL1E-H12SND, FL1E-
H12
RCE an
d FL1E-B12RCE are equipped with the inputs
I1, I2, I7 and I8, which can also be programmed for use as
AI3, AI4, AI1 and AI2 inputs. As described in section 5.2.4,
you can configure these modules to use either two analog
inputs (AI1 and AI2), or all four. Signals at the I1, I2, I7 and
I8 inputs are interpreted as digital values, and those at the
AI3, AI4, AI1 and AI2 inputs are interpreted as analog
values. Note that AI3 corresponds to I1 and AI4 corresponds
to I2. This numbering preserves the previous
correspondence of AI1 to I7 and AI2 to I8 that was available
with the FL1D series.The inputs of a connected analog
module are numbered according to the already existing
analog inputs. See section 2.1.1 for example setups. In
programming mode, when you select the input signal of a
spe
cial fu
nction that takes an analog input, IDEC
SmartRelay offers the analog inputs AI1...AI8, Analog
memory markers AM1...AM6, analog outputs AQ1 and AQ2,
and the block numbers of functions with analog outputs.
Outputs:
1
) Di
gital outputs
Digital outputs are identified by the character Q. The
outpu
t
numbers (Q1, Q2, ... Q16) correspond with the numbers of
the output connectors at the IDEC SmartRelay base module
and with those of the expansion modules, in their order of
installation. See the following figure.
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