Precidia ipocket232, User Manual

Page: 30 / 106

4 Configuring the Serial Port Settings iPocket 232 User Guide
23-CML000293 iPocket232 Inc. 24
Table 4.1: Data Formatting Options
Menu Item Description
Terminate
No alterations are made to the data stream, but incoming data is checked for known
"end-of-record" characters, or "terminators", that identify the end of a block so that it
can be transmitted as a whole to the remote host. If this mode is selected, you will be
prompted to enter up to six Terminators in their ASCII decimal form (e.g. <CR> = 13).
This is ideal when the host requires pre-parsing of the data, such as with an AS/400.
N
OTE
:
To use zero (null) as a terminator, you must set it as Terminator #1. Any zeroes
after the first terminator are ignored.
The second part of the Protocol setting, session mode , determines how the data channel between the
terminal and the server is established. Communications between the device and the host can be over
TCP or UDP channels. In addition, the device can initiate a session immediately, or wait until either the
server (host) or the terminal (client) attempts to establish a connection. Table 4.2 describes the session
mode options.
Table 4.2: Session Mode Options
Menu Item Description
tcp(tunnel)
Typical configuration for most applications.
Use tcp(tunnel) mode when the iPocket 232 must be able to initiate
TCP connections and accept TCP connections from the host. In this
configuration, the iPocket
232 can communicate with the TCP/IP
host as if it were virtually connected. Local Port, Remote Port, and
Remote IP must be configured. Sections 4.6 through 4.10 describe
how to configure ports and IP addresses.
tcp-client
Use tcp-client mode when all transactions must be initiated by the
terminal. This ensures that a TCP/IP host (server) can never initiate
communications with the terminal.
tcp-server
Use tcp-server mode when the TCP/IP host must never be
interrupted by the terminal unless it authorizes a connection. This
ensures that data from the terminal will be discarded until the server
establishes a session. As a security feature, the host address must
match the Remote IP configured in the
Serial Port Settings
(it is
not necessary to match the Remote Port). Local Port and Remote
Port must be configured. Sections 4.6 through 4.10 describe how to
configure ports and IP addresses.