Access Modes

The DS Manager has three fundamental modes of operation, called access modes , that define how it finds, connects to and works with Device Servers. Desired access mode is selected from the access mode drop-down box , located at the top of the main window of the DS Manager (see figure below):


Available access modes are:

Auto-Discovery In this mode the DS Manager automatically finds all local Device Servers* and displays them in the device list (remote Device Servers located behind one or several routers cannot be auto-discovered). Device list is updated each time Refresh button is pressed, only devices that have actually responded to the refresh appear in the list.   
Address Book In this mode the list of available Device Servers- called "the address book"- is created manually by the User and the DS Manager does not attempt to locate Device Servers automatically. Device list displays all entries from the address book at all times, even if corresponding Device Servers are not online. Actual availability of each Device Server is reflected in the status icon for this DS. In this mode the DS Manager can communicate both with local and remote Device Servers (i.e. located behind the routers on different network segments)**. Since local Device Servers can easily be accessed using the auto-discovery mode the primary use of the address book mode is to access remote Device Servers.
Serial Access In this mode the DS Manager communicates with the DS connected (by its serial port) to the COM port of the PC. Device list displays all available physical COM ports of the PC and the refresh button is hidden. Since the DS is accessed through its serial port it must be in the serial programming mode for this access method to work. Therefore, the User must press the setup button*** to make the DS enter the serial programming mode before the DS Manager will be able to access the DS.


LED_ser_progStatus LEDs of the DS are playing a serial programming mode pattern (shown on the left) when the serial port of the DS is in the serial programming mode (click here to see all available patterns).

* I.e. the Device Servers located on the same network segment. The definition of the network segment implies that there are only network hubs (and no routers, bridges, firewalls, etc.) between the PC and all other devices on the segment.

** Ability to access remote Device Servers also depends on the configuration of the network, routers, and Device Servers.

*** On EM100, EM120, EM200, EM203(A)- pull the MD line LOW for at least 100ms.