Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 50)

6-2 AutoMax Network Communication Option Board
6.1 Accessing the Alternate Register Map
To access the alternate register map, set NETW REGISTER MAP SEL (P.914) to ALTERNATE .
Some parameters are not available and others are mapped differently when NETW
REGISTER MAP SEL (P.914) is set to ALTERNATE . Make sure your application uses the
correct mappings if you switch from the original register map to the alternate register map.
Important: When a version 4.2 Regulator board is used as a replacement in an
existing AutoMax network that uses the ALTERNATE register map, you
may need to reprogram the master task so that it writes valid data in the
registers that are now being used (where previously they were marked as
reserved).
6.2 Diagnosing Processing Errors
In the alternate map, Drop_1, register 27, the number of the parameter that caused a
processing error (indicated by alternal map, register 0, bit 10) is now recorded. If there
are no processing errors, the value will be set to -1.
Because some parameters are processed in groups, it is not possible to always report
the specific parameter that is out of range. Instead, the first parameter number of the
group that conains the error is reported (see table 6.1). For example, if
MOP ACCEL
TIME (P.115) was set out of range by the Network Option board, Drop_1, register 27
would contain the value 14 ( S - CURVE ROUNDING ). Parameters not listed in table 6.1are
handled on an individual basis by the parameter processing routines so the parameter
causing the processing error is reported by number directly. This feature is available
only with the alternate register map. Also listed in the table are possible non-user
paramter numbers (
≥ 25000) that can cause parameter processing errors.
Be aware that certain parameters are used as limits for other parameters (for example,
TOP SPEED (P.011) determines the maximum limit for MAXIMUM SPEED (P.004). The
FlexPak 3000 Software Reference (D2-3405) describes the relationships between all
user parameters. It is also possible (but very unlikely) to get a processing error
reported for a non-user parameter number not listed below. If this occurs, the
Regulator board is suspect. Cycle power, and if another non-user parameter number
processing error occurs, replace the Regulator board.