Rockwell Automation 8520-9API 9/Series OCI API Developer's Guide - Manual (Page 85)

4–37 OCI Data Server Data Items
Publication 8520-6.6 - August 1999
MESSAGE_BASE-LAST-INDEX, range_num
Data Type
UDINT
Read/Write Read only
Array Index range_num
Control Type Lathe/Mill/Grinder 1
1 Grinder Control Type is not available for Release 1 of 9/PC.
The message bases for system error messages are divided into three
categories, Common Message Base (Range 1 – 200), Single Process
Control Specific Message Base (Range 201–300) and Dual Process
Control Specific Message Base (301–400). The
MESSAGE_BASE_LAST_INDEX API returns the values of the last
index in each of the message base sections mentioned above. The
range_num may be used to obtain the last index for a particular
section. For example, MESSAGE_BASE_LAST_INDEX,1 returns
the last index of the Common Message Base.
ACTIVE_PAL_MESSAGES, line_num
Data Type
String
Read/Write Read only
Array Index line_num
Control Type Lathe/Mill/Grinder
Important: This data item does not apply to 9/PC.
This item is used to pass any active PAL/Logic messages to the OCI
station. PAL/Logic messages are created by your logic program.
The line_num index is used to identify the number of the PAL/Logic
message. You must use valid PAL/Logic message line numbers for
this data item. Valid line numbers are 1, and 13-22. You can request
up to five line numbers with each DDE request. The data item is
returned as invalid if any other line numbers are used.