Destination settings allow you to control settings on field communication devices; these settings are tied to IP address and port, not CygNet remote or communication devices.
To Find the TCP/IP Destination Settings Dialog Box
The following settings are found on the TCP/IP Destination Settings dialog box.
Note: All settings on the TCP/IP Destination Settings dialog box are applied to all devices that share the same IP address and port. Setting changes here overrides related settings in the TCP/IP MultiPoint Device Editor for this remote device. Destination settings are applied only when you select OK on the TCP/IP Destination Settings dialog box.
| Property | Description |
|---|---|
|
Use Comm default |
Use this column of check boxes to change the TCP/IP settings to its right. Checking a Use Comm default box means you accept the defaults. |
|
IP Address |
The IP address of the field comm device. |
|
Port |
The port number of the field comm device. |
|
Advanced>>> |
Click this button to expand the TCP/IP Destination Settings dialog box. Note: TCP/IP Destination Settings are tied to field comm device IP address and port, not CygNet remote or communication device. |
| Connection control | |
|
Maintain connection |
Check this box to maintain connection with the field comm device. Maintain connection and Close on inactivity work independently of each other. If both are set, Maintain connection takes precedence. |
|
Attempt interval (sec) |
Defines the interval (in seconds) between attempts to reestablish connect with a field comm device if Maintain connection is enabled. Do not set the value of this property below the default unless you have a good metric for changing it. If you do lower this value, take into account the Attempt Timeout. |
| Inactivity | |
|
Close on inactivity |
Check this box to close connection to a field comm device when no activity has occurred for the period of time specified by Max idle time (sec). |
|
Max idle time (sec) |
The maximum duration (in seconds) to allow for inactivity. The field comm device could have its own preset duration for inactivity. If the field comm device’s period is shorter than Max idle time (sec), the connection is closed by the field comm device. |
| Keep-alive | |
|
Send keep-alive character |
Check this box to send a character to the field comm device to maintain a connection. This ensures that the field comm device does not terminate connection. Use of this property depends upon the field comm device. This property is applicable only when Maintain connection is enabled. |
|
Keep-alive character |
The character (ASCII value) to send to keep the connection alive. |
|
Interval (sec) |
The interval (in seconds) between sends of the Keep-alive character. |
A number of TCP Modem properties can be overridden at the remote device level. When a remote device is configured to use a TCP Modem communication device, the remote device editor will activate an Override settings option when the Browse button beside Comm ID is selected. Choosing this option will display the Modem Settings box. This box lists the properties that can be changed for the remote device. Clicking the Advanced button on a Remote Device Editor will also provide access to the Override settings option through the Communication Configuration dialog box.
To change a property in the Modem Settings dialog box, click to uncheck the Use Comm Default box for the property and then enter a new value for the property.
The Pri phone number field specifies the number to dial instead of the default phone number defined in the modem configuration. For example, you have 10 RTUs each with its own remote modem. As such, you would specify the primary phone number for each remote modem rather than using the modem default. Conversely, you have one modem that connects to a radio that in turn polls 10 RTUs. In this case, the modem default would apply to all 10 remotes.
The System ID, shown by clicking the System button, is applicable only if you want to specify the machine name on which the UIS must be running in order for the phone number to be applicable. The primary phone number is used if both the Primary and Alternate System IDs are blank, or the Primary System ID matches the machine name. The Alternate System ID is used only if it matches the machine name and the Primary does not.
| Primary System ID | Alternate System ID | Number Used |
|---|---|---|
|
Blank |
Blank |
Primary |
|
Match |
No Match |
Primary |
|
No Match |
Match |
Alternate |
|
Blank |
Match |
Alternate |
|
Blank |
No Match |
None (Configuration Error) |
For example, you have a system that is configured for disaster recovery. The primary machine, named CYGNETPRI, is in the 805 area code as are the remote modems that it dials. The failover machine, named CYGNETBU, is outside the 805 area code. When the primary machine dials the modem, it does not require an area code. As such, the Pri phone number would be 555-1212 and its System ID would be CYGNETPRI. The Alt phone number would be 805-555-1212 and its System ID would be CYGNETBU.
A number of properties for Direct Serial, Serial Modem, and Serial Radio devices can be overridden at the remote device level. When a remote device is configured to use a Serial type communication device, the remote device editor will activate an Override settings option when the Browse button beside Comm ID is selected. Choosing this option will display the Serial Settings dialog box. This box lists the properties that can be changed for the remote device. Clicking the Advanced button on a Remote Device Editor will also provide access to the Override settings option through the Communication Configuration dialog box.
To change a property in the Serial Settings dialog box, click to uncheck the Use Comm default box for the property and then enter a new value for the property. Properties available for override are Bits per second, Data bits, Parity, Stop bits, and Flow control.
|
|
|
