1. Introduction

    PCMD diagrams are stored in a diagram set, which comprises a single Mimic diagram, and zero or more Copies and Checkpoints (archived Mimic diagrams).

    Two versions of PCMD are available: Single-user and Multi-user.

     
  2. Single-Client PCMD

    This version resides on the user’s PC, and is licensed using a USB memory stick ‘dongle’. The diagram sets are stored locally or, for greater security, may be loaded onto a network file server.

     
  3. Multi-Client PCMD

    This version allows more than one user to share diagrams without conflict. The diagram sets are stored in a library on a file server. Within the diagram sets, each Mimic, Copy and Checkpoint diagram is accessed separately.

    Diagrams are securely ‘Taken out’ and ‘Returned’ as necessary, and are locked when they are taken out, to enforce exclusive access. A user may also create a local copy of a diagram that is in the library, which can subsequently be stored in the library if required for future reference.

    A Multi-user PCMD license specifies the system’s maximum permissible number of concurrent Authorised client PCs. When a user takes out their first Mimic diagram the count of ‘Authorised client PCs’ is increased. When a user returns their final Mimic diagram, the count of Authorised client PCs is reduced. Taking out a Copy or Checkpoint diagram, or making a local copy does not affect the count of Authorised client PCs.

    A single memory stick ‘dongle’ is provided, which is used to enable the system management functions of the PCMD server management application. This application is used to set up and manage the PCMD infrastructure files on the file server. Client licensing is controlled by the files on the file server.