User's Manual

COBALT UHF-SERIES CHAPTER 8: STANDARD TCP/IP INTERFACE
PAGE 121 OF 140
CHAPTER 8:
STANDARD TCP/IP INTERFACE
8.1 STANDARD TCP/IP OVERVIEW
Another means of communicating with the Cobalt is through the standard TCP/IP
protocol. For this manual, the protocol is referred to as standard TCP/IP to
distinguish it from other industrial protocols.
In this environment, the Cobalt acts as the server and the host or PLC acts as client.
Standard TCP/IP sessions are established between the host computer and the
Cobalt via TCP/IP client software. A TCP/IP session generally consists of three
stages: connection setup, data transactions and connection termination.
All connections to the Cobalt are initiated by client side software only. If, for example,
an existing connection terminates unexpectedly, the Cobalt will not attempt to contact
the client software or re-establish a connection. The client is responsible for opening,
maintaining, and closing all TCP/IP sessions.
After establishing a successful connection, communications between the host and
the Cobalt can proceed. When communication is no longer necessary, it is the
responsibility of the client side application to terminate the connection.
ATTENTION:
• The TCP/IP client software (running on the host or PLC) must connect to the TCP/IP
server (Cobalt) on port 50200
• Maximum number of words transferred to/from an RFID tag per read/write cycle: 100
Words / 200 Bytes
• Disable any firewall services running on the PC. Firewalls can potentially block
communications between the Cobalt and the host and/or PLC
8.2 STANDARD TCP/IP - IP CONFIGURATION VIA
HTML S ERVER
To configure the Cobalt for standard TCP/IP communications, begin by assigning the
controller a locally compatible IP address.
Through a standard Web browser, you can utilize the Cobalt’s HTML Server to
access an embedded suite of controller configuration tools, called the “OnDemand
Utilities.” Among its features is the ability to modify and save changes to the
controller’s IP address, which is stored internally on the Cobalt.
Cobalt Industrial Ethernet RFID Controller Default IP Address:
192.168.253.110