X-Rite VeriColor Spectro, Setup & Operator Manual

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V E R I C O L O R ® S P E C T R O
13
Hardware Interface Description
The VeriColor Spectro interconnects externally using serial communications and/or discrete
signals to a computer or programmable device; detailed as follows. Additionally, there is a
visual indicator which provides system status during set-up or local maintenance monitoring.
Refer to the appendices for electrical interface details and examples.
Discrete Input Lines
These control lines are part of the 'Power/Comm/Control' cable and are low power, active
high inputs, as referenced to the ground return power supply input. Each input has an on/off
timing cycle which creates the signal that the VeriColor Spectro recognizes and then takes a
responsive action.
The active high condition means to initiate an action utilizing a positive voltage signal (+9Vdc
to +24Vdc) for a specific time period. The time period is typically 65 milli-seconds, ±15 milli-
seconds in duration. The 'Discrete Select Request' (DSR) has longer special conditions that
are explained later.
Power/Comm/Control Cable (p/n: VCS50-EUR8-DB5)
Discrete Select Request (DSR) – gray wire
This input is used to prompt the selection of a different color standard before the next
measurement is taken. It is the control input (request) that allows the toggling of the 1's and
10's input, so it must be activated first.
During the activation of DSR, new measurement triggers are locked out (ignored) until DSR
is completed. Each time DSR is enabled, the color number selection starts at 0 (zero) and
increments according to the 1's and 10's toggling. After the new color number has been
selected, when DSR is completed, the new color number is stored. If the DSR input is
released without changing the color number (toggling the 1's or 10's), the color number
remains at the previous stored value.
There is a maximum of
250 colors that can be stored and therefore selected.
Due to the requirement that this input remain on (active) while the 1's and 10's are toggled,
the time duration or period is dependent on the number of those 1 and 10 activations
combined.
1's Select – blue wire
This input can only be used while DSR is active.
Each time this input is toggled the color number will increment by 1.
This input can be used at the same time as the 10's input, so it should only toggle a
maximum of 9 times to prevent selection errors.
10's Select – pink wire
This input can only be used while DSR is active.
Each time this input is toggled the color number will increment by 10.
This input can be used at the same time as the 1's input, so it should only toggle a maximum
of 24 times to prevent selection errors (i.e. 24 toggles times 10 is 240 and added with 9
ones is 249).