Chapter 6: Configuring the Serial Server Properties
UDP Mode
When UDP mode is chosen, the Serial timeout, TCP alive timeout, Connection mode, Connection at, Max connection, and Remote IP address fields are replaced with the following fields: Destination IP address range, Port number, and Source IP address range. In this mode, you can configure the server to broadcast data to and receive data from multiple IP addresses. Four IP address range fields are provided.
Figure
Serial Timeout
Default for the Timeout property is 0, or no timeout. Setting Timeout to any value between 1 and 65535 seconds activates it. If Timeout is set to 5 seconds and the Serial Server is configured as a Server, the Client makes a connection and communications starts. If communications are ideal for 5 seconds, the Serial Server will reset and make itself available for another client connection.
TCP Alive Timeout
The Serial Server monitors TCP activity. If TCP activity stops for the length of time specified in this field, the connection will be closed. This field can be set to any value between 0 and 255 minutes. If zero, or no value, is entered into this field, the server will not disconnect.
Connection Mode
The Connection Mode field has three options: Server, Client, and Client (no heartbeat). When Client or Client (no heartbeat) is selected, the Connection at field automatically becomes active (allowing the user to select Power up or Data Arrival).
•When using the Virtual COM Port feature, select Server.
•When using a TCP or UDP Socket program, select Server.
•When using Paired Mode communication between two serial servers, set up one as a Client and the other as a Server.
•When connecting to a server that does not support Heartbeat, select Client (no Heartbeat).
Delimiter HEX 1 and Delimiter HEX 2
These fields allow the user to enter two ASCII characters (in hex format) that delimit the beginning and end of a message. When a message with both these delimiters is received at the serial port, the data contained in the serial buffer is placed in an Ethernet packet and sent out the Ethernet port. If only Delimiter 1 is set (Delimiter 2 is zero or blank), upon receiving Delimiter 1 the Serial Server will put all the data in the serial buffer in an Ethernet packet and send it out the Ethernet port. If serial data greater than 1 kilobyte is received, it will automatically be placed in an Ethernet packet and sent out the Ethernet port.
Page 35 |
