PC Communication, Excel IRC, Remote Communication

COMMUNICATION

EXCEL 50/100/500/600/800

synchronization process. Any new device added to the system bus will adopt the bus system time.

NOTE: If you enter the time on the local MMI of an older device (prior to V2.0.xx), synchronization will not be carried out. Even the locally entered time might be overwritten by a synchronization coming from a newer device (V2.0.xx or higher).

Point Refreshing

Excel controllers provides a refresh mechanism (that is adapted to the Token timing) for sending the values of the attributes "Value", "Manual Value", "Operating Mode", and "Alarm Status" to either an MMI interface or to a front-end. (A maximum of two point refresh messages can be sent while the controller is holding the Token.)

PC Communication

An Excel 50/100/500/600/800 system can also accommodate a PC connected to the C-bus. Multi-master communication is still supported and token passing continues between the individual bus devices. The C-bus treats controllers as being equal in rank to a PC.

Excel IRC

Excel controllers support communication with the Excel IRC control system. This system monitors and controls individual rooms within a building. The Excel IRC system communicates on the C-bus via its Multicontroller (MC). The Application control functions for Excel IRC, called ACFs, are all processed by the MC.

See EXCEL 5000 IRC Integration System Overview and Application Guide, EN3R-1182GE51, for additional information.

Remote Communication

Excel 50/100/500/600/800 controllers are all able to communicate to remote building supervisors via an analog or ISDN modem connected to them. This allows two-way communication between the building supervisors and the controllers. The Excel 100/500 controllers can store the numbers and passwords for up to three supervisors and can call them in response to critical alarms or other programmed triggers, or the supervisor can call at any time for status, trend, or alarm information.

Disable dial-out (V2.04.xx or higher) Automatic upload of the remote trend buffer can be disabled by a remote front-end (XBS 1.6.0 or higher). In this case, remote trend values are stored in the buffer, with newest values overwriting oldest when the buffer is full, but the controller does not dial out to send remote trend buffer level alarms or to flush the buffer. The controller will still dial out for critical and uncritical alarms.

Excel 100 and 600 controllers and Excel 500 controllers with V1.5.xx firmware or earlier can, when operating as stand-alone controllers, make use of the XDM506 modem submodule mounted on the CPU board. The XDM506 can perform all of the functions of the XM100A in providing remote communication capability with up to three building supervisors.

Direct modem connection (Excel 50/500, V2.01.xx or higher and

Excel 800, V3.00.xx or higher)

Excel 50/500 controllers with firmware version V2.01.xx or higher, Excel 100C controllers, as well as Excel 800 controllers with firmware version V3.00.xx or higher have the advantage of allowing direct connection of a modem or ISDN terminal

EN2B-0092GE51 R0512