Specifications

2-Series RS-232/422/485 Expansion Card Crestron C2COM-3
Configuration Manager Prompt
For example, drag the Canon VC-C1 (RS-232 Control) serial driver from the
Crestron DB | Canon | Camera folder, and drop it on C2COM-3, Port A. SIMPL
Windows prompts you to replace the existing driver. Click Yes twice. Now double-
click the Canon driver in the system tree. The Serial Settings tab in the “Device
Settings” window displays the values for the Canon driver.
NOTE: Some serial devices in the Crestron Database have the same serial driver
settings as the SIMPL Windows default settings.
C2COM-3 Symbol in Programming Manager
Programming Manager is where programmers “program” a Creston control system
by assigning signals to symbols. The following illustrates the symbol associated with
the ports of the C2COM-3 in SIMPL Windows.
Detail View of an C2COM-3 Device Symbol in SIMPL Windows' Programming Manager
The <tx$> (transmit) and <rx$> (receive) signals transmit serial data to and from the
COM port in whatever port or driver settings is specified for the device in
Configuration Manager. The protocol that a device expects will be described in the
manufacturer's documentation and includes the speed of communication (baud rate),
error checking (parity), the number of data bits and stop bits, and any hardware or
software handshaking that may be required to control the flow of data between
devices.
Some devices require a <break> to enable synchronization. The <break> input
drives the transmit pin of the associated COM port low, thus interrupting
transmission of data. Some <break> signals can be 17 to 20 bits of logic low,
whereas others hold transmission low for as long as <break> remains high. Again,
the hardware documentation will contain information about the type of <break> a
device generates.
8 • 2-Series RS-232/422/485 Expansion Card: C2COM-3 Operations & Installation Guide - Doc. 8176