ELITE
Installation guide
Chapter 1: Installation
17
The following table shows the standard RS-232C serial interface port signals and
connector pin-outs for the Elite system. The Elite is a DTE device:
Signal Name
DB-9 DTE DB-25 DTE
DCD Data
Carrier
Detect
1
8
RXD* Receive
Data
2
3
TXD* Transmit
Data
3
2
DTR Data
Terminal
Ready
4
20
GND* Signal
Ground
5
7
DSR
Data Set Ready
6
6
RTS
Request to Send
7
4
CTS
Clear to Send
8
5
RI Ring
Indicator
9
22
* These three signals are of primary interest to the system.
When interfacing the Elite system with external devices, the only required signals
are TXD, RXD and GND.
The external device, however, may require that other pins be connected.
These systems use what is called “hardware handshaking.” Contact the device
manufacturer for more information if you need help with handshaking.
It is often helpful to use a break-out or “blinky light” box to check whether an
interface cable is properly wired. A properly wired cable will show a low voltage
(typically a red light) for
both TXD and RXD
when no data is being transmitted, and
a flickering high voltage (typically a flickering green light) for either TXD or RXD
when data is being transmitted. If there is no voltage (no light) for either TXD or
RXD, first check that the signal ground (GND) is connected through both connectors
properly. If either TXD or RXD is low, but the other has no voltage, you may need to
reverse the wiring for TXD and RXD on a connector, because there is a conflict.
If problems persist, be careful to check connectors for loose pins and sockets.
Soldering connections may increase their durability. If a problem remains after
troubleshooting, contact Innovation.
Most Device interfaces are preloaded at Innovation before your system is shipped.
To adjust communication settings, such as baud rate, parity, data bits, or stop bits,
click the
Do
button in the Elite main screen and then select
Configure System
. In the
next screen, click
Device Interfaces
in the system tree, then double-click the icon that
represents the interface. In the next window, choose different settings as needed. For
more details on these settings, see
Device interfaces
in Chapter 3.
To monitor an interface, click the
Do
button in the Elite main screen and then click
the
Interface
option. Messages transmitted by the Elite interface are displayed in
green. Received data is displayed in red.