NDC BETA LaserMike LaserSpeed Pro 8500-4, Instruction Handbook Manual

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11-6 LaserSpeed Pro 8500-4 Instruction Handbook:
Profibus DP™
11.3.2 PKW Command Code List
Command Code Description
0 Idle
1 Database Enumerate
2 Reserved
3 Reserved
4 Read Long (4-byte) setting value
5 Write Long (4-byte) setting value
6 Read Float (4-byte Real) setting value
7 Write Float (4-byte Real) setting value
8 Load String setting
9 Read String Segment
10 Write String Segment
11 Save String setting
12 Measurement Table Enumerate
13 Read Long (4-byte) measurement value
14 Read Float (4-byte Real) measurement value
11.3.3 PKW Idle Command (Command Code 0)
The gauge responds with all zeroes in the response data
and a “success” response code. It is recommended
that the idle command be issued before starting Profinet IO communication, and during operation if no data-
base items need to be read or written.
11.3.4 PKW Enumeration Command (Command Code 1)
This command allows the LaserSpeed Pro database to be enumerated. A single database item can be enu-
merated with each command/response exchange; this makes it quite slow to enumerate the entire database.
There is no requirement to enumerate the database. The database section of this document provides details
of database item identifiers, types, and access permissions, and it is possible to use this published infor-
mation directly with the other database services. The enumeration service allows generic test programs to be
written that have no prior knowledge of the LaserSpeed Pro database.