Using Dial-Up with the NDM

Transcription

1 Operator Workstation User s Manual 16-1 Chapter 16 Using Dial-Up with the NDM Introduction This section describes using the Dial-Up feature to connect to remote devices via the N2 Dialer Module (NDM). The N2 Dial feature allows you to communicate over phone lines through the NDM to remote devices. Using the NDM may eliminate the need for a second NCM at the remote site. The N2 Dial feature also allows remote devices to send alarms and change-of-state messages to the local OWS. Before you can connect to devices using the N2 Dialer Module, both the local and remote NDMs must be configured using the N2 Dial application in the HVAC PRO system. This chapter describes how to: display the N2 Dial Network summary refresh the N2 Dial Network summary close the N2 Dial Network summary dial a remote site disconnect from a remote site November 1, 2001 Johnson Controls, Inc. Code No. LIT

2 16-2 Operator Workstation User s Manual Key Concepts N2 Dial Network Summary The N2 Dial Network summary displays the status of all connections from the OWS to remote sites that are connected via the NDM. It is also used to dial a remote site or disconnect from a remote site. Figure 16-1 shows an example of an N2 dial network summary. Table 16-1 describes the different fields in the summary. Figure 16-1: N2 Dial Network Summary Table 16-1: Fields in the N2 Dial Network Summary Field Dial State Remote Site Name Telephone # Description Indicates that the local network dialed a remote site (Dial-Out) or a remote site dialed in to the local network (Dial-In) The name of the remote site as it was defined when configuring the local NDM using the HVAC PRO system. (This is not the System/Object name.) The phone number for the remote site as it was defined when configuring the local NDM using the HVAC PRO system Refreshing the N2 Dial Network Summary Refreshing the N2 Dial Network Summary updates the summary to show all remote sites in their current state. When you dial out to a remote site, and then return to the N2 Dial Network summary, the Dial State field for remote site to which you dialed is updated (to Dial-Out). If a remote site dials in to the local network, the N2 Dial Network summary does not refresh to reflect the current Dial State field (of Dial-In). You must manually refresh the summary.

3 Operator Workstation User s Manual 16-3 Log Off the Metasys System By default, when the password times out, or when a user logs off the Metasys system, communications to all remote sites are automatically disconnected. When operators set the N2DialDisconnectOnLogoff parameter in the METASYS.INI file to No, all sites remain connected after logging off. IMPORTANT: If you set the N2DialDisconnectOnLogoff parameter to No, the OWS remains connected to the remote site until you manually disconnect. This is especially important to remember if you have long distance remote site connections.

4 16-4 Operator Workstation User s Manual Detailed Procedures Displaying the N2 Dial Network Summary To display the N2 Dial Network summary, on the Setup menu, click N2 Dial. The N2 Dial Network summary appears (Figure 16-1). Refreshing the N2 Dial Network Summary To refresh the N2 Dial Network summary manually: 1. Display the N2 Dial Network summary. 2. On the Action menu, click Refresh. The N2 Dial Network summary is refreshed. Closing the N2 Dial Network Summary To close the N2 Dial Network summary, on the Item menu, click Close. Notes: The N2 Dial Network summary cannot be closed until you have disconnected from all remote sites to which you dialed out from the OWS. If you attempt to close without disconnecting, a message box appears telling you to disconnect from all remote sites before closing the summary. (The summary can be closed while a remote NDM is dialing in.) If you log off and the summary is open, you are automatically disconnected from all dialed out remote sites and the summary closes before the logoff is initiated. If you want to close the summary (or log off) without disconnecting, change the N2DialDisconnectOnLogoff setting in the METASYS.INI to No. However, it is important to remember that all connections, even long distance, will remain intact after you close the summary (or log off).

5 Operator Workstation User s Manual 16-5 Dialing a Remote Site Note: To dial a remote site, both the local and remote NDMs must first be configured using the N2 Dial application in the HVAC PRO system. To dial a remote site: 1. On the Setup Menu, click N2 Dial. The N2 Dial Network summary appears. 2. Select the Remote Site Name to which you want to dial. Note: If the remote site is currently dialed in, the dial-in connection is automatically broken when dialing out using the same NDM. 3. On the Action menu, click Dial. The N2 Dial dialog box appears (Figure 16-2). Figure 16-2: N2 Dial Dialog Box 4. Select the desired NDM. Notes: Only those NDMs configured with the Remote Site selected in Step 2 appear in the NDM list. If an NDM is currently communicating with a remote site (either Dial-Out or Dial-In), the Dial State appears next to the name of the NDM. If you choose to use this NDM, the current connection is automatically broken. 5. Click Dial.

6 16-6 Operator Workstation User s Manual Note: The Dial Status field is valid only during the Dial process. Table 16-2 describes the six Dial statuses that may appear in the Dial Status field during the Dial process. Table 16-2: Dial Statuses Status Connected Dialing Disconnected Failed None Retrying Description Indicates that the Dial operation was successful and that you are currently connected to the remote site Indicates that the NDM is currently dialing the remote site Indicates that the NDM is currently disconnected from the remote site Indicates that the Dial operation failed. The NDM will try to dial the remote site the number of times specified when the NDM is configured using the HVAC PRO system. If no connection is made, the Dial Status is failed. The user must then click Dial to reinitiate the dial operation. Indicates that the Dial operation is currently not being performed. This is the status that is displayed until the Dial button is clicked and the Dial process begins. Indicates that a connection could not be made and that the NDM is currently retrying the number. The number of retry attempts is specified when configuring the local NDM with the HVAC PRO system. 6. When the Dial operation is complete, the Dial Status appears either connected or failed. 7. Minimize (or close) the N2 Dial Network summary to view the Network Map. Note: You cannot close the N2 Dial Network summary without disconnecting from all remote sites to which you dialed out from the OWS. Disconnecting from a Remote Site To disconnect from a remote site: 1. On the N2 Dial Network summary, choose the remote site from which you want to disconnect. 2. On the Action menu, click Disconnect. The phone connection is disconnected and the status Dial-Out no longer appears in the Dial Status field.