Crestron C2COM-2 How to use

Crestron C2COM-2 & C2COM-3
2-Series RS-232/422/485 Expansion Cards
Operations & Installation Guide

This document was prepared and written by the Technical Documentation department at:
Crestron Electronics, Inc.
15 Volvo Drive
Rockleigh, NJ 07647
1-888-CRESTRON
All brand names, product names and trademarks are the property of their respective owners.
©2003 Crestron Electronics, Inc.

Crestron C2COM-2/3 2-Series RS-232/422/485 Expansion Cards
Contents
2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 1
Introduction ...............................................................................................................................1
Functions and Features................................................................................................1
Specifications ..............................................................................................................2
Physical Description....................................................................................................2
Industry Compliance ................................................................................................... 3
Installation and Hookup............................................................................................................. 3
Installation................................................................................................................... 4
Hookup........................................................................................................................4
Important Information for PRO2 Users.......................................................................6
Programming Software.............................................................................................................. 7
Programming with the Crestron AppBuilder...............................................................7
Programming with SIMPL Windows.......................................................................... 7
Problem Solving ...................................................................................................................... 11
Troubleshooting ........................................................................................................11
Further Inquiries........................................................................................................12
Future Updates .......................................................................................................... 12
Return and Warranty Policies.................................................................................................. 13
Merchandise Returns / Repair Service ...................................................................... 13
CRESTRON Limited Warranty ................................................................................13
Operations & Installation Guide - Doc. 8192 Contents •i

Crestron C2COM-2/3 2-Series RS-232/422/485 Expansion Cards
2-Series RS-232/422/485
Expansion Cards: C2COM-2/3
Introduction
Functions and Features
The C2COM-2 and C2COM-3 RS-232/422/485 expansion cards provide RS-232,
RS-422, or RS-485 serial communication for a Crestron®2-Series control system
(PRO2, RACK2, PAC2, or AV2 with cage card). The C2COM-2 has two serial ports
while the C2COM-3 has three serial ports. The C2COM-2/3 fits in any of the 2-
Series control system’s Y-bus slots. The Y-bus provides high-speed communications
and supports current and enhanced Crestron control system expansion cards. All
C2COM-2/3 ports can communicate with the Crestron Network Poll Accelerator.
NOTE: The Network Poll Accelerator allows a 2-Series control system to maintain a
fast response time (high-speed communication) 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).
The C2COM-2/3 supports baud rates up to 115,200 bps (and higher with the
Network Poll Accelerator), and a variety of communication parameters with
hardware and software handshaking. Valid parameters are shown in the functional
summary.
Functional Summary
• Supports RS-232, RS-422, and RS-485 communications via DB9 male
connector
• Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 and
115200
• Parity may be even, odd, none, or zero stick (parity bit always 0)
• Data bits may be 7 or 8
• Stop bits may be 1 or 2
• Both XON/XOFF software handshaking and RTS/CTS hardware handshaking
are supported
• Break sequence can be generated under program control
NOTE: Due to a non-standard pin configuration that allows the C2COM-2/3 to
support RS-232, RS-422, and RS-485, Data Set Ready (DSR) and Data Terminal
Ready (DTR) are not supported.
Operations & Installation Guide - Doc. 8192 2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 •1

2-Series RS-232/422/485 Expansion Cards Crestron C2COM-2/3
Specifications
The following table provides specifications for the C2COM-2/3.
C2COM-2/3 Specifications
SPECIFICATION DETAILS
Power Requirements 3 Watts (0.125 Amp @ 24VDC)
RS-232/422/485 Baud Rate Up to 115.2K baud
Output Signal Levels RS-232: ±12VDC
RS-422/485: 0 to 5VDC
Handshaking Hardware - CTS, RTS, CTS/RTS
Software - XON transmit, receive, bi-directional
2-Series Control Systems
Update File1,2
C2COM-2: Version 3.015.CUZ or later
C2COM-3: Version 1.014.CUZ or later
Operating Temperature and
Humidity
41º to 104º F (5º to 40º C)
10 to 90% Relative Humidity (non-condensing)
Dimensions Height: 0.98 in (2.49 cm)
Width: 5.00 in (12.70 cm)
Depth: 6.80 in (17.28 cm)
Weight: 4.50 oz (0.14 kg)
1 Crestron 2-Series control systems include the AV2 with CAGE2, PAC2, PRO2, and RACK2.
2 Filenames for 2-Series control system update files have a CUZ extension and can be obtained from
the Downloads | Software Updates section of the Crestron website (www.crestron.com). Refer to
note after this footnote.
NOTE: Crestron software and any files on the website are for Authorized Crestron
dealers and Crestron Authorized Independent Programmers (CAIP) only. New users
may be required to register to obtain access to certain areas of the site (including the
FTP site).
Physical Description
The C2COM-2/3 is a circuit board fastened to an aluminum faceplate. The card is
manufactured to easily fit in an unoccupied Y-bus slot of a Crestron 2-Series control
system. The faceplate on the C2COM-2 contains two identical bidirectional DB9
male connectors while the C2COM-3 contains three bidirectional DB9 male
connectors. The connectors are labeled A, B and C. Refer to the following
illustrations for a detailed view.
C2COM-3 Faceplate
C2COM-2 Faceplate
2 •2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 Operations & Installation Guide - Doc. 8192

Crestron C2COM-2/3 2-Series RS-232/422/485 Expansion Cards
C2COM-3 (L) & C2COM-2 (R): Top, Side & Front View
0.98 in
(2.49 cm)
6.81 in
(17.30 cm)
6.59 in
(16.73 cm)
5.00 in
(12.70 cm)
6.81 in
(17.30 cm)
5.00 in
(12.70 cm)
0.98 in
(2.49 cm)
6.59 in
(16.73 cm)
NOTE: These diagrams are for illustration purposes only and do not show the exact
location of components on the circuit board.
Industry Compliance
As of the date of manufacture, the C2COM-2 and C2COM-3 have been tested and
found to comply with specifications for CE marking and standards per EMC and
Radiocommunications Compliance Labelling (N11785).
NOTE: 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.
Installation and Hookup
The C2COM-2/3 cards are designed for installation into a dedicated expansion slot
on a 2-Series control system.
CAUTION: The C2COM-2/3 and control system contain electro-static discharge
(ESD) sensitive devices. Perform the following procedure while wearing a
Operations & Installation Guide - Doc. 8192 2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 •3

2-Series RS-232/422/485 Expansion Cards Crestron C2COM-2/3
grounding strap that is properly grounded and on a grounded workstation to avoid
damaging the C2COM-2/3 and/or the control system.
CAUTION: To prevent stripping of screw heads, threads, or mounting holes, DO
NOT overtighten screws. Tighten only to the specification listed in the individual
step(s).
NOTE: If the C2COM-2/3 is being installed in an AV2, the optional CAGE2 must
be installed before continuing below. For instructions on installing the CAGE2 into
an AV2 control system, refer to the latest revision of the CAGE2 3-Card Expansion
Cage for AV2 Installation Guide (Doc. 5964).
Installation
Follow the instructions below to install the C2COM-2/3 into a 2-Series control
system.
Tools/hardware required
Non-standard DB9 (RS-232/422/485) cable (Refer to DB9 cable
information on page 5)
Phillips screwdriver
Grounding strap or grounded workstation
1. Disconnect power from the control system.
2. Remove the two screws and blank faceplate from the desired slot in the
control system using a Phillips screwdriver.
3. Align the C2COM-2/3 with the card guides in the open slot and slide
the expansion card into the slot.
4. Firmly press both ends of the C2COM-2/3 faceplate to seat the
expansion card in the control system connector.
5. Hand-tighten the thumbscrews to secure the C2COM-2/3 to the control
system.
6. Connect DB cable(s).
7. Reapply power to the contol system.
Hookup
Non-standard DB9 connectors (two on the C2COM-2, three on the C2COM-3)
provide distinct bidirectional serial ports on the C2COM-2/3. Refer to the following
sample hookup illustration.
NOTE: For pinout information on connection to third-party serial devices,
download Crestron’s Cable Database Software. The latest version can be obtained
from the Downloads | Software Updates section of the Crestron website
(www.crestron.com).
4 •2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 Operations & Installation Guide - Doc. 8192

Crestron C2COM-2/3 2-Series RS-232/422/485 Expansion Cards
Sample Hookup Connections for C2COM-2 (top) and C2COM-3 (bottom)
Serial Device
Serial Device
NOTE: The pinout of each 9-pin port is non-standard. Therefore, do not use a
straight-through DB9 cable. The following table contains pinout descriptions for
RS-232 and RS-422. Conflicts with some equipment may occur unless the controlled
devices are properly wired. Certain devices have specific voltage requirements.
Therefore, do not use all nine pins in a given application. Although the possibility is
remote, improper wiring may result in damage to the controlled device. Only the
required pins for each communication type should be connected.
Non-Standard COM Pinout (for RS-232 and RS-422 Communication)
PIN DIRECTION DESCRIPTION
1* To C2COM-2/3 (RXD-) RS-422 Receive Data (Idles low)
2 To C2COM-2/3 (RXD) RS-232 Receive Data
3 From C2COM-2/3 (TXD) RS-232 Transmit Data
4 From C2COM-2/3 (TXD+) RS-422 Transmit Data (Idles high)
5 Ground RS-232 and RS-422 Signal Common
6 To C2COM-2/3 (RXD+) RS-422 Receive Data (Idles high)
7 From C2COM-2/3 (RTS) RS-232 Request to Send
8 To C2COM-2/3 (CTS) RS-232 Clear to Send
9 From C2COM-2/3 (TXD-) RS-422 Transmit Data (Idles low)
*RS-422 transmit and receive are balanced signals requiring two lines plus a ground in each direction. RXD+
and TXD+ should idle high (going low at start of data transmission). RXD- and TXD- should idle low (going
high at start of data transmission). If necessary, RXD+/RXD- and TXD+/TXD- may be swapped to maintain
correct signal levels.
A common application is to use a three-wire null modem serial cable to
communicate with a PC, as shown in the following diagram. Since the pinouts on the
C2COM-2/3 are non-standard, the card should not be plugged into the PC directly.
The pinout in this illustration emulates the IBM PC AT connector except for the RS-
422 signals on pins 1, 4, 6, and 9.
Operations & Installation Guide - Doc. 8192 2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 •5

2-Series RS-232/422/485 Expansion Cards Crestron C2COM-2/3
Three-Wire Null Modem Serial Cable
RED
WHITE
BLACK
RXD 2
TXD 3
GND 5
3 RXD
2 TXD
5 GND
9-PIN FEMALE
"D" CONNECTOR
9-PIN FEMALE
"D" CONNECTO
R
NOTE: To support RS-485, tie pin 1 (RXD-) to pin 9 (TXD-) and pin 4 (TXD+) to
pin 6 (RXD+) in the cable (refer to the following table).
COM Pinout to RS-485 Bus
COM (DB9) CONNECTOR RS-485 BUS
Tie Pins 1 & 9 -
Tie Pins 4 & 6 +
Pin 5 G
Important Information for PRO2 Users
When power is applied to the PRO2, the front panel displays the Main Menu (shown
below). The COM menu function button (directly below COM) allows the user to
monitor transmission and reception traffic on every COM-type device and card that
is active in the SIMPL Windows program loaded in the control system, including the
C2COM-2/3.
PRO2 Front Panel (Sample of Main Menu)
When the COM button is pressed, (default front panel page) the display shows a list
of devices and cards to be monitored (one at a time). The user selects the slot and
port for the C2COM-2/3 by using the NEXT or PREV buttons on the panel. For
more information on viewing port traffic, refer to latest revision of the PRO2: 2-
Series Integrated Dual Bus Control System Operations Guide (Doc. 5957). It is
available from the Downloads | Product Manuals section of the Crestron website
(www.crestron.com).
6 •2-Series RS-232/422/485 Expansion Cards: C2COM-2/3 Operations & Installation Guide - Doc. 8192