OnCell G3100 Series
Configuring Serial Port Operation Modes
8-13
Designated local port 1
through
4
(default=5010 through 5013): Use these fields to specify the designated
local ports.
Connection control
(default=Startup/None): This setting determines the parameters under which a TCP
connection is established or disconnected. The different options are given in the following table. In general,
both the Connect condition and Disconnect conditions are given.
Option
Description
Startup/None (default)
A TCP connection will be established on startup, and will remain active indefinitely.
Any Character/None
A TCP connection will be established when any character is received from the serial
interface, and will remain active indefinitely.
Any Character/
Inactivity Time
A TCP connection will be established when any character is received from the serial
interface, and will be disconnected when Inactivity time is reached.
DSR On/DSR Off
A TCP connection will be established when a DSR signal of OnCell is “On”, and will
remain active indefinitely.
DSR On/None
A TCP connection will be established when a DSR “On” signal is received, and will
remain active indefinitely.
DCD On/DCD Off
A TCP connection will be established when a DCD signal of OnCell is “On”, and will
remain active indefinitely.
DCD On/None
A TCP connection will be established when a DCD “On” signal is received, and will
remain active indefinitely.
Packet length
(default=0): This field refers to the maximum amount of data that is allowed to accumulate in
the serial port buffer before sending. At the default of 0 for packet length, no maximum amount is specified and
data in the buffer will be sent as specified by the delimiter settings or when the buffer is full. When a packet
length between 1 and 1024 bytes is specified, data in the buffer will be sent as soon it reaches the specified
length.
Delimiter 1 and Delimiter 2
(default=None): When Delimiter 1 is enabled, the serial port will clear the buffer
and send the data to the Ethernet port when a specific character, entered in hex format, is received. A second
delimiter character may be enabled and specified in the Delimiter 2 field, so that both characters act as the
delimiter to indicate when data should be sent.
ATTENTION
In order to enable a delimiter, packet length must be set to 0. Delimiter 2 should only be enabled in
conjunction with Delimiter 1 and never on its own; otherwise there may be data errors. Even when a delimiter
is enabled, the OnCell G3100 will still pack and send the data when the amount of data exceeds
1 KB
.
Delimiter process
(default=Do Nothing): The Delimiter process field determines how the data is handled
when a delimiter is received. Delimiter 1 must be enabled for this field to have effect. If Delimiters 1 and 2 are
both enabled, both characters must be received for the delimiter process to take place.
•
Do Nothing:
Data in the buffer will be transmitted when the delimiter is received.
•
Del 1:
Data in the buffer will be transmitted after 1 additional byte is received following the
delimiter.
•
Del 2:
Data in the buffer will be transmitted after 2 additional bytes are received following the
delimiter.
•
Strip Delimiter:
Data in the buffer is first stripped of the delimiter before being transmitted.
Force transmit
(default=0 ms): This parameter defines how large a gap in serial communication the OnCell
G3100 will allow before packing the serial data in its internal buffer for network transmission.
As data is received through the serial port, it is stored by the OnCell G3100 in the internal buffer. The OnCell
G3100 transmits data stored in the buffer via TCP/IP, but only when the internal buffer is full or as specified by
the force transmit time. When set to 0, the force transmit time is disabled, and transmission is determined
solely by the data in the internal buffer. At 1 to 65535, the TCP/IP protocol software will pack the serial data
received after there is a gap in serial communication that exceeds the specified force transmit time.
