Manual

4 Configuring the Serial Port Settings iPocket232 User Guide
24 Precidia Technologies Inc. 23-CML000293
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.
Termi-
nated
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.
NOTE: To use zero (null) as a terminator, you must set it as Termi-
nator #1. Any zeroes after the first terminator are ignored.
Table 4.2: Session Mode Options
Menu Item Description
tcp(tun-
nel)
Typical configuration for most applications.
Use tcp(tunnel) mode when the iPocket232 must be able to initiate
TCP connections and accept TCP connections from the host. In this
configuration, the iPocket232 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 inter-
rupted 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 con-
figure ports and IP addresses.
Table 4.1: Data Formatting Options
Menu Item Description