Ether232Plus User Guide 4 Configuring the Serial Port Settings
02-CML000057 Precidia Technologies Inc. 35
4.12 Packet Prefix (Transparent Protocol Only)
If you select Transparent in the Protocol setting, you have a Packet Prefix option.
Packet Prefix allows you to insert a two-byte header stating the length of the data in
the packet, including or not including the header itself. Some POS systems, such as
ACI BASE24, may require these types of headers.
To set or change the Packet Prefix:
1 Choose
Serial Port
from the Device Settings menu.
2 Choose
Packet Prefix
from the Serial Port Settings sub-menu.
You are prompted to enter the packet prefix type, as shown below.
3 Choose a packet prefix type and press
Enter
.
4.13 Maximum Inter-Character Delay (Transparent Protocol
Only)
Maximum inter-character delay specifies the maximum elapsed time in milliseconds
between received characters before the Ether232Plus forwards the data packet to the
destination, to a maximum of 60 000 ms. This option accumulates the data before
sending it and therefore tends to group related data together and reduce network over-
head.
If left at zero (0), the Precidia unit determines a reasonable delay based on the config-
ured Port Settings.
To enter or change the Max Inter-Char Delay:
1 Choose
Serial Port
from the Device Settings menu.
2 Choose
Max Inter-Char Delay
from the Serial Port Settings sub-menu.
You are prompted to enter the maximum inter-character delay in ms.
3 Type the time for the delay at the prompt and press
Enter
.
A. none - received bytes are sent in packets with nothing extra
B. length - a 2-byte header indicating the length of the data to follow
C. length+2 - a 2-byte header indicating the length of data plus header
Enter packet prefix type (letter):
Choosing the Packet Prefix Type
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