Psion Teklogix Vehicle-Mount Computer 8255, User Manual, Page: 193 / 348

Teklogix 7035, 8255 & 8260 Terminals User Manual
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Chapter 7:Setting Parameters
Serial
If a TSDK (Teklogix Software Development Kit) is used to develop your
application, the serial-input and serial-output fields are configured as the screen sets
are created using the Wintsf screen editor. A serial-in field is an ‘Entry’ field with
the serial attribute box checked and a serial-out field is a ‘Fixed’ field with the serial
attribute box checked (refer to the “7035/8255/8260 Software Development Kit
User Manual” – PN 80455)
.
Important: If you are using serial-input fields, make sure the ‘SI Mode’
parameter is set to
field
.
When ‘SI Mode’ is set to
command
, serial input is not displayed on the terminal
screen. It is transmitted directly with a TESS response command. To use this mode,
the TSDK TESS message macro TESS_RESP_SERIAL_INPUT will identify the
received message as input data from the terminal serial port.
Serial Notes:
1.
Field
mode is supported by both emulations and Software Development
Kits.
Command
mode is only supported by Software Development Kits.
2. You can configure the terminal to automatically transmit data received
through the serial port without user intervention. When ‘SI Mode’ is set to
Field
, automatic transmission of serial data can be done by setting the
‘SI Fnkey’ parameter to the desired function key.
When ‘SI Mode’ is set to
Command
, automatic transmission is based on
the configuration of the ‘Port’ parameters as well as the ‘SI Prefix’ and
‘SI Suffix’ values. If the suffix and prefix values are not used (set to zero),
serial data is transmitted after the ‘Input Tmo’ value (in the ‘Ports’,
‘Serial 1’ menu) has expired. If the serial data is received in bursts and
the ‘Input Tmo’ value expires between bursts, the serial data may be
transmitted in several packets. If prefix and suffix values are used for SI
data, the ‘Input Tmo value will not affect the transmission of the data from
the terminal.
Serial data is passed to the TESS session after the ‘Serial 1’ port
‘Input Tmo’ value has expired and/or the prefix and suffix characters
are received.
SI Prefix
This parameter determines the start-of-message character on serial input. A value
of “0” (zero) indicates no prefix. Enter an ASCII numeric equivalent from 0 to 255
to represent the start character.