Emerson SI-PROFIBUS

Unidrive M SI-PROFIBUS User Guide 53
Issue Number: 3
Safety
information
Introduction
Mechanical
installation
Electrical
installation
Getting
started
Parameters
GSD
Files
Cyclic data
Non-cyclic
data
Control and
status words
Diagnostics
PROFIdrive
profile (V4)
Advanced
features
Legacy
features
Glossary of
terms
Index
SI-PROFIBUS supports the following features:
• DP-V1 Parameter Access
• PROFIdrive PNU Access (see section 12.11 PROFIdrive PNU access on
page 75)
• Fault Buffer (see section 12.12 Fault Buffer on page 76)
• Drive Identification (see section 12.13 Drive Identification on page 78)
• Identification and Maintenance Functions (see section 12.14 Identification and
Maintenance Functions on page 78)
The maximum DP-V1 message length is restricted to 128 bytes including the four bytes
of the DP-V1 header and the four bytes of the PROFIdrive request, this leaves a
maximum of 120 bytes for the parameter data; the maximum number of parameters that
can be read or written in a single message is shown in Table 9.1.
Table 9.1 Single message parameter limitation
9.3.1 DP-V1 Parameter channel
Drive parameters (and PROFIdrive PNU’s) can be accessed using the PROFIdrive
Parameter Channel, the global slot number 0 and slot sub-index 47. This is illustrated in
Figure 9-1.
Mode Maximum number of parameters
16-bit 32-bit
Read 20 20
Write 12 10
DP-V1 slot numbers 1 and 2 are also allowed when the DP-V1 slot index = 47 (for the
I&M function, DP-V1 slot must be zero).
The PROFIdrive PNU’s and I & M functions will be accessible using functions available
in the master.
NOTE
NOTE