16
RCM-26 Remote Control Module
Owner’s Manual
7, CONTROL PORT
The CONTROL PORT of the RCM-26 provides two
control inputs, two control outputs and reference
connections for +5V and ground. The control inputs
are configurable via IRIS-Net™. They can be used
for example for switching between power on /
standby modes, switching between presets or to
control parameters. The two control contacts IN1 and IN2 are internally
connected via pull-up resistors and carry +5V (open). The control inputs can be
activated using external switches, pushbuttons or relays to connect them to
ground potential (pin 3). The two control outputs OUT1 and OUT2 are open
collector outputs, which are highly resistive in the non-active state (off). In active
state (on) the outputs are connected to ground. The control outputs are
configurable via IRIS-Net™ and are used to signal internal states. LEDs,
indicators or relays can be driven directly. The +5V reference connector
provides voltage supply for connected components.
8, RS-232 Interface
The RS-232 interface is for interconnecting the RCM-26 module and multi-
media control systems or facility management systems. All parameters can be
controlled and queried via RS-232 interface. Communication is realized through
the use of ASCII-protocol. Implementation of this protocol is rather simple.
Programming notes and a complete protocol description are included in the
IRIS-Net™ documentation. The following illustration shows the pins of the RS-
232 interface that the RCM-26 uses. The length of the RS-232 cable that is
employed to connect the RCM-26 to another device should not exceed 15
meters.
CAUTION:
The maximally allowable current at the +5V output is 200 mA.
Illustration 2.5: Pin-assignment of RS-232 Interface
Содержание RCM-26
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