Mitsubishi FX3U-32DP, User Manual

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40
FX
3U
-32DP PROFIBUS-DP Interface Block
User’s Manual
6 Buffer Memory Allocation
6.9 PROFIBUS Module ID [BFM #26]
6.9 PROFIBUS Module ID [BFM #26]
BFM Access : Read Only
This BFM shows the ID code that the PROFIBUS User Organization (PNO) has issued to the 32DP : F332h.
6.10 Slave Address [BFM #27]
BFM Access : Read / Write
This BFM shows the actual slave address. When changing the slave address with a TO instruction, users
must write the new address value (0 - 126
d
) to this BFM, while verifying that the configured DP address will
match the projected DP address.
When the slave address is changed more than once in 5 seconds, the "Consistency Error" (BFM#29 Bit5) and
"Change Slave Address EEPROM Error" (BFM#37 Bit10) appear, and the 32DP latches the latest valid
address. For changing the slave address via SSA-telegram, the valid address setting range is (0 to 125
d
).
When the new address value is outside the range (0 to 126
d
), a "Slave Address Change Error" appears, and
the 32DP latches the latest valid address. The slave address can only be changed when the slave is in STOP
mode (BFM#20 Bit0 = OFF) with the "Address Change Impossible Flag" set to OFF (BFM#25 Bit8). When the
user changes the slave address with the "Address Change Impossible Flag" set to ON (BFM#25 Bit8), the
"Consistency Error" (BFM#29 Bit5) and "Change Slave Address EEPROM Error" (BFM#37 Bit10) appear.
→
For details on the Address Change Impossible Flag, refer to Section 6.8
6.11 User Diagnostics [BFM #28]
BFM Access : Read / Write
By writing to this BFM, the 32DP can send user-diagnostic data with high priority to the DP-Master. The data
from this BFM is handled as the extended diagnostic data by the DP-Master. When using this functionality,
users need to define the meaning for each bit. This functionality is compatible to the FX
0N
-32NT-DP. The
32DP maps this BFM to BFM#1307.
→
For the details on other diagnostic data, refer to Section 6.37