System-To-System Communication - Crestron SW-SIMPL Installation & Operating Manual

Software
144 • Crestron SIMPL Windows
You are now able to modify or delete existing entries as well as add new ones. When
you have made all the changes necessary, you can save the new table to disk and/or
load it back into the control system. Once you have made these changes, be careful
not to overwrite the IP table in the control system the next time you upload the
program (unless the addresses in your program supercede those in the current IP
table).

System-to-System Communication

History
Crestron control systems have long been able to exchange information while
running, creating a distributed network. The control systems communicated via a
serial cable connected to individual RS232 ports on each control system. The SIMPL
Windows program uses the "Intersystem Communications" symbol (formerly known
as XSIG to Workshop users). This symbol takes lists of digital, analog, and serial
signals, and converts them to a stream of serial information that was typically sent
out a comm port (e.g. CNXCOM-8) and into the comm port of the receiving system.
Another symbol of the same type in the receiving system would convert the
information back into separate digital, analog, and serial signals by matching up
signals in corresponding list positions.
System-to-System via Ethernet
System-to-system communication over Ethernet is very similar to past methods, in
that the same "Intersystem Communications" symbols are used, but the sending and
receiving strings generated by these symbols are sent to a "Virtual Communication
Port", instead of a physical comm port. In the SIMPL Windows Configuration
Manager, you can find this device under "Ethernet Control Modules" folder. Drag-n-
Drop it onto the CNXENET card or on the "Ethernet Units" arrow as shown. Double
click on the icon and assign an IP ID and corresponding IP address.
Crestron SIMPL™ Windows
Installation & Operations Guide – DOC. 5728C