DLAN/DLAN+ (Drives Local Area
Network) Interface restrictions
PACSystems RX7i CPUs with firmware versions 1.50 or later support
DLAN Interface, IC697BEM763 modules with firmware versions 3.00
or later. You must ensure that you are using a valid version of the
DLAN firmware because the CPU cannot check the DLAN’s firmware
version. (The module’s firmware version can be found on a label
attached to the EEPROM.)
If your RX7i application program needs to access the DLAN’s dual port
memory, use the BUS READ and WRITE functions. When accessing a
DLAN module, set the Region parameter on the function block to 1.
(For the DLAN module, region 1 is predefined to be the module's
entire dual port memory.)
The DLAN is only supported in the main RX7i rack. It is not supported
in expansion racks.
Note: The DLAN Interface module is a specialty module with limited
availability. If you have a DLAN system, refer to the
DLAN/DLAN+ Interface Module User’s Manual, GFK-0729 for
details.
Genius Bus Controller restrictions The following restrictions apply to GBCs in PACSystems RX7i:
The minimum CPU sweep time will be gated by the time it takes
the GBC to refresh its outputs and collect its inputs + 500
microseconds. To obtain a smaller sweep time, use the SUSIO
function block or place the GBCs in a scan set that has nondefault characteristics.
If a %W reference address is used for COMMREQ status or
return data, it must be in the range %W00001 - %W65536.
Storing or clearing a hardware configuration containing two GBCs
attached to the same Genius network may cause a Loss of
Device fault for one of the GBCs. This is caused by the GBCs
clearing their SBAs asynchronously. The user can safely ignore
the Loss of Device fault.
