60
EM1500 Configuration
Remote TCP port
Remote TCP port number for outgoing connections to the network. This is a default
which may be overridden by ATDT commands.
Remote host
Host name or IP address of default remote peer to connect to when an outgoing con-
nection is initiated. May be overridden by ATDT commands.
Ephemeral port
When checked, outgoing connections use a local ephemeral TCP port number. Other-
wise “Local TCP port” is used.
Check this option if the EM1500 is acting as a client on this serial port.
Use Nagle
When checked, TCP connections buffer outgoing data using the Nagle algorithm.
This is recommended for most applications. If turned off, latency will be reduced at
the expense of greater network bandwidth requirements.
Don’t Purge
When checked, data received by the serial port before a connection is established will
be sent to the peer. If not checked, then pre-connection data is discarded.
Check this option if you are using polling and want to talk to the serial device off-line.
Approximately 1020 data bytes may be buffered while not connected. Additional data
is discarded until a connection is established.
Incoming connections
Select when to listen for incoming connections from the network. The choices are:
•
Never accept - This port will not be a server, but can be a client.
•
Always accept - This port will automatically listen for incoming connection requests.
•
Accept when DSR - This choice only applies to SER1 or SER3 configured as 9-wire
DTE. It is a signal from the attached device saying that it is ready.
•
Accept when DTR - This choice only applies to SER2. It is a signal from the attached
device saying that it is ready.
Summary of Contents for EM1500
Page 14: ...10 www rabbit com Introduction...
Page 22: ...18 www rabbit com Getting Started...
Page 76: ...72 www rabbit com EM1500 Configuration...
Page 90: ...86 www rabbit com EM1500 Specifications...
Page 104: ...100 www rabbit com Serial and TCP Protocols...
Page 118: ...114 www rabbit com EM1500 FAQ...