Super Systems SuperDATA - Manual (Page 51)

Super Systems Inc Page 51 of 172 Super Data Operations Manual
Remote channels may be mapped by "channel" OR by "channel/slot". When mapping by channel, all slots from the
remote channel are mapped to corresponding slots in the local channel. This reduces configuration and has the
advantage that Realtime screens and SDRec charts can be the same on both computers with the possible exception of
the channel number.
When the remote channel is a system channel (e.g. OPCBridge channel), putbuffs to the local channel can be
reflected back to the remote channel. This allows writes back to the system channel (and in the case of OPCBridge
channels, back to the source). E.G, suppose a workstation is running RSlinx with PMComms and OPCBridge. The
server may use ComRBridge to map the OPC channels to the server (this is already being done at several locations).
When the server sees a local data change, it will reflect the data change back to the workstation's inttbl.dat, the
OPCBridge will see the data change and write the new data to the RSLinx OPC Server. This write reflection only
works when the remote channel is a SYS or SYSOPC channel. Write reflection is NOT currently implemented for
serial/ethernet communication channels - they are read only.
When ComRBridge initializes, it modifies the local scspsys.cfg file to add the mapped channels. If alarm bitmaps are
mapped, ComRBridge will include the ALM configuration in the instrument line.
When 2 or more remote sources are gathering the same data, a remote source may have 1 or 2 alternate sources
(RSxxAx). The primary source is always used first, if it fails either because a) the inttbl.dat is not found (e.g. remote
computer off or disconnected) or b) the communications on the remote computer is stopped (monitors CommsWD in
chan 0 slot 2) it then attempts the next alternate source. Write reflection moves to the source currently in use. Note:
This feature maye be useful when setting up a redundant furnace control system. Each Workstation is independent
and there are redundant comms.
When ComRBridge is running there is a status and info dialog available (normally minimized).