System information
  Introduction 
2  Manual Documentation Number: PES1A/PESV1A-0712m 
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  10/100 Mbps auto-detecting operation 
  IEEE 802.3af (Power over Ethernet) compatible 
  Web Configuration and Management user interface 
  Email event notification 
Communication Modes 
PES1A/PESV1A Ethernet to  RS-232  converters allow  you  to connect 
serial devices over a LAN or WAN. Serial devices no longer are limited to a 
physical connection to the PC COM port. They can be installed anywhere on 
the LAN using TCP/IP or UDP/IP communications. This allows traditional 
Windows PC software access to serial devices anywhere on the LAN/WAN 
network. 
Direct IP 
Direct  IP  Mode  allows  applications  using  TCP/IP  or  UDP/IP  socket 
programs to  communicate with  the  asynchronous  serial  ports  on the  serial 
server. In  this mode  the  PES1A/PESV1A is  configured as  a TCP  or UDP 
server. The socket program running on the PC establishes a communication 
connection. The data is sent directly to and from the serial port on the server. 
TCP Server Mode allows network devices to initiate a TCP connection to 
the serial device connected to the serial port on the PES1A/PESV1A. This is 
also referred to as reverse telnet. 
UDP Server Mode allows network devices to initiate a UDP connection to 
the serial  device attached to  the serial port  of the  PES1A/PESV1A. When 
using UDP protocol the PES1A/PESV1A can be configured to broadcast data 
to and receive data from multiple IP addresses. 
Virtual COM Port 
Virtual  COM  Port  mode  (also  called  RealPort,  or com  port  redirection) 
allows you to map a COM port on your PC to the serial port on your 
PES1A/PESV1A.  Using  the  RealPort  software  (included  with  the 
PES1A/PESV1A)  you  create  virtual  COM  ports  on  your  PC.  When  your 
application  sends  data to  this port,  RealPort  redirects  the  data across  the 
network to serial device connected to the PES1A/PESV1A serial port. The 
network is transparent to the user application and the serial device connected 
to the PES1A/PESV1A. 










