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Crestron Electronics, Inc.

 

 

Installation Guide - DOC. 7236A

15 Volvo Drive   Rockleigh, NJ 07647 

(2031434)

Tel: 888.CRESTRON 

11.11

Fax: 201.767.7576  

Specifications subject to 

www.crestron.com change 

without 

notice.

Crestron 

C2N-IO

Control Port Expansion Module
Installation Guide

Regulatory Compliance

Further Inquiries

If you cannot locate specific information or have questions after reviewing this guide, please take advantage of 
Crestron's award winning customer service team by calling Crestron at 1-888-CRESTRON [1-888-273-7876]. For 
assistance in your region, please refer to the Crestron Web site (www.crestron.com) for a listing of Crestron 
worldwide offices.

You can also log onto the online help section of the Crestron Web site (www.crestron.com/onlinehelp) to ask 
questions about Crestron products. First-time users will need to establish a user account to fully benefit from all 
available features.

Future Updates

As Crestron improves functions, adds new features and extends the capabilities of the C2N-IO units, additional 
information may be made available as manual updates. These updates are solely electronic and serve 
as intermediary supplements prior to the release of a complete technical documentation revision. 

Check the Crestron Web site periodically for manual update availability and its relevance. Updates are identified 
as an “Addendum” in the Download column.

Federal Communications Commission (FCC) Compliance Statement

This device complies with part 15 of the FCC rules. Operation is subject to the following 
two conditions: (1) This device may not cause harmful interference and (2) this device 
must accept any interference received, including interference that may cause undesired 
operation.

The 

 

C2N-IO is a very compact device that adds control ports to any Crestron

®

 2-Series or 

3-Series™ control system. It connects via the Cresnet

®

 control network and provides one 

RS-232, one IR and two relay control ports. It can be mounted to any flat surface using two 
screws or adhesive reclosable fastener (3M

®

 Dual Lock

®

 included).

The C2N-IO is ideally designed for use with a Crestron TPCS-4SM or TPCS-4SMD touch 
screen control system, providing an advanced wall mount control package that fits in a 2-gang 
US or UK electrical box. The C2N-IO can be mounted inside the electrical box, behind the 
touch screen or it can be installed remotely, requiring just one Cresnet control cable for power 
and communications.

DESCRIPTION

Specifications

Specifications for the C2N-IO are listed in the following table.

C2N-IO Specifications

*  Refer to "Identity Code" in the last column on this page for details.

SPECIFICATION

DETAILS

Power
 

Cresnet Power Usage

1 Watt (42 mA @ 24 Volts DC)

Default NET ID

A5*

Device Database

Version 37.05.001 or later

Crestron Database

Version 28.05.001 or later

Environmental
 Temperature
 Humidity
 Heat 

Dissipation

32° to 104° F (0° to 40° C)
0% to 90% RH (non-condensing)
3.5 BTU/Hr

Dimensions
 Height
 Width
 Depth

2.25 in (58 mm)
3.50 in (89 mm), 4.38 in (112 mm) with bracket
0.83 in (21 mm)

Weight

3 oz. (75 g)

Included Accessories

Mounting bracket, Dual Lock fastener

Physical Description

This section provides information on the connections, controls and indicators available on 

your C2N-IO.

C2N-IO Overall Dimensions

As of the date of manufacture, the C2N-IO has been tested and found to comply with 
specifications for CE marking and standards per EMC and Radiocommunications 
Compliance Labelling.

Communications
 Cresnet
 RS-232

 IR/Serial

Cresnet slave device, 2-Series and 3-Series compatible
Supports 2-way device control and monitoring up to  
115.2k baud with software handshaking
Suports 1-way device control via infrared up to 1.2 MHz 
or  serial TTL/RS-232 (0-5 Volts) up to 115.2k baud

Enclosure

Metal, freestanding or surface mount;
Fits inside 2-gang electrical box, 1.38 in (35 mm) 
minimum internal box depth required for C2N-IO and 
TPCS-4SM(D) combined

The C2N-IO has been tested by Intertek Testing Services NA Inc. and complies with 
ANSI/UL 2043, the Standard for Fire Test for Heat and Visible Smoke Release for 
Discrete Products and Their Accessories Installed in Air-Handling Spaces-Third Edition.

3.50 in

(89 mm)

2.25 in

(58 mm)

1

2

3

5

6

8

7

4

0.83 in

(21 mm)

CAUTION:

  Changes or modifications not expressly approved by the manufacturer 

responsible for compliance could void the user's authority to operate the equipment.

Identity Code

The Net ID of the C2N-IO has been factory set to 

A5

 (with a mechanical setting of 

00

).

The Net ID of the C2N-IO can be set using one of two methods:

  

• 

Manual setting

: Set the two 

NET ID

 controls (from 03 to FE) to match the 

  

 

Net  ID 

  

 

in  the  SIMPL  Windows  program.

  

• 

Touch-settable ID

: Set the two 

NET ID

 controls to 00 and set the Net ID using  

  

 

Crestron Toolbox. This is the factory setting. For more details, refer to the  

  

 

Crestron Toolbox help file.

When setting the Net ID, consider the following:

  

•  The Net ID of each unit must match an ID code specified in the control system  

  

 

program.

  

•  Each network device must have a unique Net ID.

Installation

The C2N-IO can be installed inside a standard 2-gang US or UK electrical box using the 
included Dual Lock fastener or mounted to another other suitable location using the 
included mounting bracket.

NOTE:

  Screws to secure the C2N-IO to a surface are not included.

NOTE:

  The 

NET ID

 controls on the C2N-IO are factory set to 00. This allows changing 

the Net ID with Crestron Toolbox™ (optional).

To use the included mounting bracket, use the included screws to attach the mounting 
bracket as shown in the following illustration. The only tool required is a #1 Phillips 
screwdriver.

Attach Mounting Bracket to C2N-IO (Optional)

Hardware Hookup

Make the necessary connections as shown in the illustration that follows this paragraph. 
Refer also to "Check Network Wiring" on the next page, before attaching the 4-position 

NET

  connector.  Apply power after all connections have been made.

CAUTION:

  Incorrect wiring may damage the C2N-IO.

(Continued on following page)

C2N-IO Overall Dimensions (with Mounting Bracket)

3.98 in

(101 mm)

4.38 in

(112 mm)

Connectors, Controls & Indicators

CONNECTORS

1

CONTROLS & 

INDICATORS

DESCRIPTION

RELAY

(1) 4-pin captive screw terminal block comprising (2) 
normally open, isolated relays; 
Rated 1 Amp, 30 Volts AC/DC, 
Solid state arc suppression across contacts

#

1

1

2

TX

GN

D

RX

S G

HI

LO

24 Y Z G

2

COM

(1) 3-pin captive screw terminal block; 
Bidirectional RS-232 port;
Up to 115.2k baud, software handshaking support

3

IR

(1) 2-pin captive screw terminal block, 
IR/Serial output port;
IR output up to 1.2 MHz;
1-way serial TTL/RS-232 (0 - 5 Volts) up to 115.2 k 
baud

4

PWR LED

(1) Green LED, indicates operating power supplied 
via Cresnet control network

5

NET LED

(1) Amber LED, indicates communication with 
Cresnet system

6

SETUP 

(LED and Button)

(1) Red LED and (1) recessed miniature push button 
for touch-settable ID (TSID)

7

NET ID

(2) Rotary switches for manually setting Cresnet ID;
'00' setting enables TSID

8

NET

(2) 4-pin captive screw terminal blocks;
Cresnet slave ports, paralleled

 

 

 

24

 

Power (24 Volts DC)

 

 

Y

 Data

 

 

Z

 Data

 

 

G

 Ground

Network Wiring

When wiring the Cresnet network, consider the following:

  

•  Use  Crestron  Certified  Wire.

  

•  Use Crestron power supplies for Crestron equipment.

  

•  Provide sufficient power to the system.

For networks with 20 or more devices, use a Cresnet Hub/Repeater (CNXHUB) to maintain 

signal quality.

For more details, refer to "Check Network Wiring" on the next page.

SETUP

CAUTION:

  Insufficient power can lead to unpredictable results or damage to the 

equipment. Please use the Crestron Power Calculator to help calculate how much power is 
needed for the system (www.crestron.com/calculators).

RELAY:

To Controllable 

Devices

COM:

To Any RS-232, 

-422 or -485 Device

IR:

To IRP2 or 

Serial Devices

NET:

To Any Cresnet 

Network Device

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