2-Series Professional Media Controller Crestron MC2E
2. Using a voltmeter, determine which wire connects to the Tip, Ring, and
Shield of the mini phone jack.
3. Connect the bare wires of the CNXRMIRD to the appropriate pins on the
3-position connector supplied with the MC2E.
For more information on the CNXRMIRD refer to the latest revision of the
CNXRMIRD Infrared Detector Operations Guide (Doc. 8165).
I/O
I/O
1 2 3 4 G
This connector provides four software programmable analog and digital inputs as well
as digital outputs. Digital outputs offer 250mA sync from maximum 24 VDC; catch
diodes for use with "real world" loads. Digital inputs are rated 0 – 24 VDC, 20K ohms
input impedance, logic threshold 1.25 VDC. Analog inputs are rated 0 – 10 VDC,
protected to 24 VDC maximum, 20K ohms input impedance; pin-programmable 2K
ohms pullup resistor to +5V.
NOTE: Digital outputs are TTL values and may not work with devices requiring a
“dry” contact closure (e.g., low voltage motor controllers).
NOTE: Ports can be used for either input or output, but not both. For more
information, refer to “Slot 3: C2I-MC2-IO4” on page 27.
RELAY OUT
1 2 3 4
RELAY OUT
These connectors provide four normally open, isolated relay contact groups. Each
relay contact closure is rated 1A, 30 VAC/DC; MOV arc suppression is provided
across contacts for use with "real world" loads. For more information, refer to “Slot 4:
C2I-MC2-RY4” on page 29.
COM (A & B)
COM B
COM A
These two DB9 (male) software programmable, bi-directional serial ports are
available for RS-232, RS-422, or RS-485 communication, with hardware and software
handshaking. Speeds are rated up to 115,200 bps. Both ports are Cresnet Network Poll
Accelerator ready.
NOTE: The Cresnet Network Poll Accelerator allows a 2-Series control system to
maintain a fast response time (high-speed communications) between the control
system and a large number of Cresnet devices. For more information, refer to the
latest revision of the Network Poll Accelerator Operations Guide (Doc. 6087).
NOTE: The pinout of each 9-pin port is non-standard (refer to the table after these
notes, titled "Non-Standard COM Pinout"); it contains RS-422 pins in addition to
RS-232. This may result in a conflict with some equipment and therefore all nine
pins should not be used. Only the required pins for each communication type
should be connected. For RS-232 and –422, pins 2, 3, 5, 7, and 8 are wired straight
through.
NOTE: Data Set Ready (DSR) and Data Terminal Ready (DTR) are not supported.
6 • 2-Series Professional Media Controller: MC2E Operations Guide - DOC. 6142
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