Specifications

Installation Instructions
21
7.5 RS-232 Connection
The RS-232 serial port connection uses standard EIA 574 pinouts
(provided in
Table 4). The RS-232 port allows you to connect external
devices to the C-Touch Colour, such as security and control equipment.
If using the RS-232 port to connect to external devices, ensure
you use a suitable shielded data cable. Cable length should be
limited to 15 metres for communication at up to 19,200 bps, or
7.5 metres at 38,400 bps.
Pin Name Description
1 DCD Data Carrier Detect
2 RD Receive Data
3 TD Transmit Data
4 DTR Data Terminal Ready
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
1
2
3
4
5
6
7
8
9
9 RI Ring Indicator
Table 4 – RS-232 pinouts
8.0 C-Bus System Clock
The C-Touch Colour incorporates a software selectable C-Bus System Clock
used for synchronising data communication on a C-Bus network. Since a
maximum of three enabled System Clock units should exist on a network,
the System Clock on the C-Touch Colour is disabled by default.