Specifications
Rev 2 Mar.18
49
41110485
Serial Port Configurations
The FX30S has one serial port that can be configured as a:
•
9-pin RS232 serial port that connects directly to most computers or other devices with a
standard serial straight-through cable
•
Half-duplex RS-485 serial interface (See
RS232 Serial Port
Serial port configured for RS232:
•
RS232/DTR allows for wakeup from Ultra Low Power Mode
•
Nine wire
•
Auto shutdown (controlled by DTR line)
•
Depending on Legato application, supports X-on/X-off
•
Hardware flow control
•
Complies with the EIA RS232D specification for DCE equipment
•
Output driver levels swing from -7 VDC to +7 VDC with normal
loading
•
DB-9 is configured as a DCE device designed for direct
connection to a DTE device, such as a computer
Note: If you need to connect to a DCE device, you must use a null
modem (cross-over) cable.
Figure 3-1: DB-9 Female Serial Connector
Table 3-1: Specifications (Continued)
5
4
3
2
1
9
8
7
6
Table 3-2: RS232 Serial Connector Pin-out
Name
Pin
Description
Type
DCD
1
Data Carrier Detect
OUT
RXD
2
Receive Data
OUT
TXD
3
Transmit Data
IN
DTR
4
Data Terminal Ready
IN
GND
5
Main GND. Connected internally
to BOARD GND
GND
DSR
6
Data Set Ready
OUT
RTS
7
Ready To Send
IN
CTS
8
Clear To Send
OUT
RI
9
Ring Indicator
OUT
