Mitsubishi Electric FX2N-64DP-M Hardware Manual page 33

FX2N-64DP-M Profibus-DP Master Block
Note 1;
When using a slave with expansion diagnostic information of more than 32 bytes, the
network will be limited. Maximum expansion diagnostic information data length is the
smaller of the value obtained from a slave address by the following equation or 244 bytes.
Maximum expansion diagnostic information data length (bytes)
*1 The value of N is the smaller of the value obtained by the following equation or 300.
N = [(Max. slave address value - Min. slave address value + 1) × 5] or [300]
It is not possible to communicate normally with the slave when the maximum diagnosis
information data length (Max_Diag_Data_Len) has been decided by the slave's GSD file is
larger than the value obtained by the above expression.
In this case, please try the following things.
1) Make the slave address consecutive number if possible.
2) Change setting so that this value may become small if the maximum diagnosis informa-
tion data length on the slave side can be set.
3) Reduce connected number of the slave.
= [12600 ÷ N *1
- 10] or [244]
Specifications 3
3-5