Using A Memory Unit; Data Format - Omron NT31 Setup Manual

Using a Memory Unit

3-4-3

Data Format

3-5

Using a Memory Unit

Reference:
36
Item
Communications protocol
Transmission of number of bar code label digits
Transmission of ID characters
Bar code types
Trigger switch setting
About RS/CS Control
During bar code reading, the NT31/NT31C performs RS/CS control. When
the Input Method setting of the NT31/NT31C is set to Auto, the RS signal is
turned OFF, prohibiting the next input, until the read data has been sent to the
host as notification.
Because of this, when the Auto setting is made, the next input is not possible
until the data has been sent to the host as notification.
However, when the setting is Auto and the RS/CS signals of the cable are
shorted, RS/CS control is ineffective. Consequently, data input from the bar
code reader to the NT31/NT31C is updated regardless of whether or not the
data is sent to the host as notification.
For details, refer to the instruction manual for the bar code reader used.
The data format for communications when using the bar code input function of
the NT31/NT31C is shown below.
STX Data
(02 )
H
The characters which are effective as data are hexadecimal codes from 20 to
7FH, and the maximum data length is 40 bytes.
Data which does not follow the data format described above is invalidated and
discarded.
This section describes how to use of a Memory Unit.
The function of the Memory Unit is determined by the model of PT being used,
regardless of the version of the system program installed in the PT.
PT Model
Without V@ suffix The system program cannot be transferred using the Memory
Unit.
With V@ suffix The system program can be transferred using the Memory Unit.
By installing a Memory Unit (NT-MF261) on the NT31/NT31C, the screen data
in the NT31/NT31C can be recorded (backed up) in the Memory Unit.
In addition, the screen data in the Memory Unit can be automatically read into
the NT31/NT31C when it starts up. This means that system program and
screen data can be changed easily at the operation site without connecting to
the Support Tool.
The data in the Memory Unit is retained without backup by a battery or other
means.
No-protocol mode
Transmission prohibited
Transmission prohibited
Multi-reading (all types can be
read)
Automatic reading mode
Data Data
Function of Memory Unit
Section 3-5
Possible Settings
ETX
(03 )
H