Mapping Conflicts; Cyclic Data Mapping Errors - Leroy-Somer digitax st User Manual

7.2.4 Eight cyclic channels with Mode 2 non-cyclic data (compression off)
This data format provides eight cyclic data channels, plus an additional four words for
Mode 2 (PPO 4 Word) non-cyclic data (See section 8.8 Mode 2 - PPO 4 Word mode ).
The total data length is twenty words in and twenty words out. To select this data format
set Pr MM.05 = 216.
Table 7.6 Mapping for eight cyclic channels with PPO 4 Word non-cyclic data
Data word
IN word 0-3
IN word 4, 5
IN word 6, 7
IN word 8-19
OUT word 0-3
OUT word 4, 5
OUT word 6, 7
OUT word 8-19
7.3

Mapping conflicts

Care must be taken to ensure that there are no clashes between mappings in the SM-
PROFIBUS DP-V1 cyclic OUT data and other drive parameters such as:
• other SM-PROFIBUS DP-V1 cyclic OUT channels
• mappings from additional SM modules if fitted (Not Digidrive SK)
• analog inputs
• digital inputs
• logic outputs
• motorised pot output
• comparator outputs
• variable selected outputs
The SM-PROFIBUS DP-V1 will not indicate if there is a mapping conflict due to any one
of the reasons listed. Should a conflict occur and a parameter is written to from two or
more different sources, the value of this parameter will depend entirely upon the scan
times for the function and the PROFIBUS-DP network. The result would be that a
parameter may appear to be steady at a particular value on the drive display, although
an occasional glitch in the displayed value may be seen. However, internally, this value
may be changing continuously between two values, leading to unusual behavior from
the drive.
7.4

Cyclic data mapping errors

The SM-PROFIBUS DP-V1 module will scan and check the PROFIBUS-DP mapping
parameter configuration for errors during initialisation. If an error is detected, then the
SM-PROFIBUS DP-V1 operating status parameter (Pr MM.06) will indicate -3, and the
configuration error detected will be indicated in mapping status parameter, Pr MM.49.
See section 10.7 Mapping status for full details.
SM-PROFIBUS DP-V1 User Guide
Issue : a
Parameter
Pr MM.10
Pr MM.11
Pr MM.12
Pr MM.13 to Pr MM.19
Pr MM.20
Pr MM.21
Pr MM.22
Pr MM.23 to Pr MM.29
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Default mapping
Pr 61.51, Mode 2 non-cyclic data
Pr 10.40, status word
Pr 2.01, post-ramp speed reference
0, not mapped
Pr 61.51, Mode 2 non-cyclic data
Pr 6.42,control word
Pr 1.21, digital speed reference 1
0, not mapped
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