Specifications

Crestron C2COM-3 2-Series RS-232/422/485 Expansion Card
2-Series RS-232/422/485
Expansion Card: C2COM-3
Introduction
Functions and Features
The 2-Series C2COM-3 RS-232/422/485 Expansion Card provides RS-232, RS-422,
or RS-485 serial communication for a Crestron 2-Series Control System (PRO2 or
AV2 with cage card). The C2COM-3 fits in either control system’s Y-bus (3) slots.
The Y-bus provides high-speed communications and supports current and enhanced
Crestron control system expansion cards. All C2COM-3 ports can communicate with
the 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-3 supports baud rates up to 115,200 bps, and supports a variety of
communication parameters with hardware and software handshaking. Valid
parameters are shown in the Functional Summary.
Functional Summary
• 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). When
specifying the parity use E, O, N, or Z, respectively.
• 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. XON/XOFF handshaking may be supported by
specifying XON (for both transmit and receive), XONR (for receive only),
or XONT (for transmit only). XON/XOFF and RTS/CTS handshaking are
mutually exclusive in the C2COM-3. If both are enabled, RTS/CTS is used.
If CTS handshaking is enabled, the CTS line is monitored by the C2COM-
3. The CTS line can also be enabled as a digital input to the control system;
the RTS line can be enabled as a digital output.
• Supports RS-422. Refer to Non-standard COM Pinout table on page 4.
• Break sequence can be generated under program control.
• Supports RS-485. Refer to COM Pinout to RS-485 Bus table on page 4.
When programming in SIMPL™ Windows

, specify RS-485 and use
RS-485 communication settings.
Operations & Installation Guide - Doc. 8176 2-Series RS-232/422/485 Expansion Card: C2COM-3 • 1