SM3000
Multipoint Videographic Recorder
6 Configuration
IM/SM3000–EN Rev. L
103
6.7.3 Hybrid Modules
Select a digital output source.
Note.
A digital output source is the internal digital source used to
activate/de-activate a digital output.
If a digital output is used to provide a totalizer count pulse,
the maximum pulse frequency is 5 Hz.
Select the digital output source polarity.
Note.
When the polarity is set to 'Positive', the digital output is
energized when the digital source is active (On).
The six digital inputs from any hybrid module produce six
independent digital states that can be used as digital sources for
recording channels, relay outputs, alarm acknowledgement etc.,
for example:
Digital I/P F1, Digital I/P F2
Additionally, digital inputs from a hybrid module in position F (see
Fig. 7.5, page 113) can be used to produce up to 32 Binary
Encoded (BCD) digital states, for example:
BCD digital I/P F0 to BCD digital I/P F31
BCD digital inputs can be used as digital sources in the same
way as standard digital inputs.
Inputs F1, F2, F3, F4 and F5 have 'weightings' of 1, 2, 4, 8, and
16 respectively. A rising edge on input F6 is used as the update
trigger.
Following an inactive to active transition on input F6, inputs F1
to F5 are evaluated, the weighted values of any active inputs are
added together and the BCD digital input corresponding to the
total is activated. All other BCD digital inputs are deactivated.
Example.
If digital inputs F1 (weighting = 1), F2 (weighting = 2) and F4
(weighting = 8) are active when digital input F6 (update trigger) is
activated, BCD digital input F11 (1 + 2 + 8) is activated. BCD
digital inputs F0 to F10 and BCD digital inputs F12 to F31 are
deactivated.
If digital inputs F1 to F5 are all inactive when digital input F6
(update trigger) is activated then BCD digital input F0 is
activated. BCD digital inputs F1 to F31 are deactivated.
