X-Rite VeriColor Spectro Setup & Operator Manual page 64

V E R I C O L O R ® S P E C T R O
NOTE 1
Due to the requirement that this input remains on (active) while the 1's and 10's input are
toggled, the on time duration (or period) is dependent on the number of 1 and 10 activations
that transpire.
NOTE 2
In the default project set-up these wires are all discrete lines. Pass, Fail and ComO are
always the same, while CH-A through CH-D and Action can have an alternate configuration.
a. Action is the default but can be configured as CH-E (channel-E).
b. CH_A through CH-D are the defaults but can be configured into a 4-wire RS485 port.
Once these lines are set as RS485, they cannot also be used as discrete outputs.
NOTE 3
These individual signal lines are part of the 'Discrete Interface' cable and all are low power
outputs which use a common control line referenced ("ComO"; the green wire). This common
line is either a supply or ground return connection for these outputs.
a. Low power means these outputs can only handle up to +24Vdc at 80-milliamps max.
b. All outputs default as normally open contacts, but can be configured as to normally
closed contacts. Note they still all use a common control line.
c. If the common control line is connected to ground, then all outputs are in low-side or
return path configuration. This means when VeriColor Spectro activates the 'pass' output,
it is providing a ground signal for an external light or relay coil to turn on.
d. If the common is connected to power (voltage ranging from +9Vdc to +24Vdc), then all
outputs are in high-side or supply path configuration. This means when VeriColor Spectro
activates the 'pass' output it is providing a positive voltage signal for an external light or
relay coil to turn on.
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