Computer Hardware User Manual
 Introduction 
Manual Documentation Number: PES1A/PESV1A-4905m  1 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com 
C
C
h
h
a
a
p
p
t
t
e
e
r
r
1
1
:
:
I
I
n
n
t
t
r
r
o
o
d
d
u
u
c
c
t
t
i
i
o
o
n
n
PES1A and PESV1A Mini PoE (Power over Ethernet) Ethernet to RS-
232 Converters provide simple and cost-effective solutions for connecting 
RS-232 devices to Ethernet networks. PES1A and PESV1A converters make 
it easy to connect serial printers, copiers, building automation, retail, point of 
sale, warehousing and banking equipment directly into Ethernet networks. 
Both models feature Power over Ethernet (PoE) operation and the PESV1A 
provides a switch selectable voltage output to power external devices. 
PES1A and PESV1A converters support virtual COM port, console 
management, TCP and UDP socket, serial bridge, terminal, modem 
emulation and custom connections. Network addresses can be obtained 
dynamically or manually. Simple Network Management Protocol (SNMP) is 
supported. Configuration is accomplished through a web-based user 
interface. 
Figure 1.  PES1A Mini POE Ethernet to RS-232 Converter 
Features 
•  Converts Ethernet to RS-232 serial 
•  Small, economical and configurable 
•  PESV1A provides selectable output power supply 
•  Supports TD, RD, TRS, CTS, DTR, DCD, DSR and GND RS-232 lines 
•  LEDs indicate link integrity and data transfer activity 
 Introduction 
2  Manual Documentation Number: PES1A/PESV1A-4905m 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com 
•  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. 










