Black Box RS-232, RS-422, RS-485, 1-Port 10/100 Device Server Overview, Page, Remote control, host

Chapter 2: Overview

TCP Client Mode: LES301A can be configured as a TCP client on TCP/IP network to establish a connection with other applications (server) in the host computer actively. After the connection is established, data can be transmitted between the serial device and the host computer in both directions.

Remote control
host	LES301A

Card

reader

LES301A Card

reader

Figure 2-5. TCP Client mode.

UDP Mode: UDP is a faster but non-guaranteed datagram delivery protocol. LES301A can be configured as a UDP mode on TCP/ IP Network to establish a connection using unicast or multicast data from the serial device to one or multiple host computers. The opposite is also true.

Computers		LES301A
	Ethernet

Serial bus Display

Figure 2-6. UDP mode.

Tunneling Mode: In this mode, a serial connection with two or more LES301A units established sends data over TCP/IP Network. This extends the 50-foot (15-m) RS-232 distance limit.

Ethernet

LES301A

Touchscreen

Serial bus

LES301APLC

Figure 2-7. Tunneling mode.

LES301A user manual 724-746-5500 blackbox.com Page 13