FEC DSP1500 Main Unit User Manual
Page 32
enFORCE
DSP1500 Main Unit Hardware Manual
(Rev. 4.0)
PAGE 4 - 6
Chapter 4: Installation & Wiring
4.6 Serial Communication Ports
The Main Unit has four usable serial RS232C (two on Ethernet Versions) and one RS422
communication port. All of these ports settings and data format are fully configurable with the DSP
User Console software.
(OPTIONAL)
STANDARD VERSION ETHERNET VERSION
RS-232C Signal Layout
1
DCD (Data Carrier Detect)
Used only for DATA-IN*
2
RXD (Receive Data)
Serial Data Input.
3
TXD (Transmit Data)
Serial Data Output.
4
DTR (Data Terminal Ready)
Output signal; active when the internal device is ready to link.
5 GND
(Ground
Signal)
6
DSR (Data Set Ready)
Input signal; indicates that the external device is ready to establish a
link. Can be connected directly to DTR for automatic data dump.
7
RTS (Request to Send)
Output signal. Active when the internal device is ready to exchange
data.
8
CTS (Clear to Send)
Input signal. Indicates that the external device is ready to exchange
data. Can be connected directly to RTS when no asynchronous data
flow is required.
9
RI (Ring Indicator)
Not used
* When using the DATA-IN port, PIN 1 (DCD) must be enabled for data input (Jumper pins 1 & 4)