Crestron ST-IO, Operation Manual

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Input/Output Module Crestron ST-IO
ST-IO Symbol in Programming Manager
Programming Manager is where programmers “program” a Crestron control system
by assigning signals to symbols. The following graphic shows the ST-IO symbol in
the SIMPL Windows’ Programming Manager.
ST-IO SIMPL Windows Symbol
The ST-IO provides eight isolated relays for controlling low voltage contact closure
devices such as drapes, screens and lifts. It also provides four local digital outputs.
When a < relay > signal goes high, the corresponding relay closes for as long as the
signal remains high. When the signal goes low, the relay opens. If a signal is
undefined, the relay is open.
The four local < i > outputs can function in either closure or voltage mode. In closure
mode (the default setting), an < i > signal goes high whenever the ST-IO detects the
presence of a switch or relay closure to ground. In voltage mode, the < i > signal goes
high when it detects the presence of an active voltage (voltages > 2.5V = logic 1, and
voltages < 1.5V = logic low).
Device Extenders
To facilitate network functions and diagnostics, SIMPL Windows provides two
device extenders for the ST-IO.
The Poll Manager and The Poll Manager (2 Series Extended) symbols are device
extenders for plug-in control cards and for Cresnet devices and touchpanels. The
Poll Manager takes the device on and offline without need to physically disconnect it
from the network, and reports the current connection status of the device.
The device extenders are available with X-Series and 2-Series control systems; they
are not available with the ST-CP or CN-Series control systems.
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Input/Output Module: ST-IO Operations Guide - DOC. 5675A