Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 668)

OCI Parameters
Chapter 38
38-2
Function
This parameter specifies the number of PCs that can connect and create
watchlists on the 9/Series CNC. Any PC that connects to the CNC through
the OCI interface creates a watchlist to access data. This does not include
ODS workstations that may connect through the Ethernet interface to
upload/download PAL, AMP, or part programs.
Axis Parameter
Number
All [332]
Range
1 to 4 OCI stations
Notes
All PCs that ask for manual items create a watchlist which is cleared after
the data is passed back to the PC.
This parameter directly impacts the amount of memory your CNC allocates
for OCI station watchlists. You should set this value as low as possible to
provide the control with as much operating memory as possible (large
watchlist creation can adversely impact the number of available setup
buffers on your system). Space is allocated for all watchlist connections
available (as specified by this parameter), regardless of if a PC is actually
connected and using the watchlist. In the event that not enough room is
available to create the specified watchlists at power up, the CNC will only
create the first watchlist buffer and the control is held in E--Stop.
Watchlists are created sequentially. If you specify 2 OCI connection
allowed with this parameter, only two watchlist data buffers 1 and 2 can be
created on the CNC. If your data server OCIDSCFG.INI file specifies a
specific data buffer to connect to, make sure that data buffer is created with
this parameter. (i.e. in the above case of 2 maximum number of OCI
connections if the data servers INI file specifies data buffer 3 for that
connecting station an error is generated even though no other OCI
connections may currently exist to that CNC and watchlist data buffers 1
and 2 are empty).
This is a global parameter; the value set here applies to all axes
and processes.
38.1
Maximum Number of
OCI Connections