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6-6
Installation and Start-up Guide for NMBP-01
Data Update
The NMBP-01 module has been designed for fast and reliable data transfer
between the Modbus Plus network and the ACS 600 drive. To get the maxi-
mum through put from the Modbus Plus network, the data is transferred
according Table 6-3 below.
Table 6-3 Transfer Modes.
Note: Register writes have priority over reads. If your PLC program per-
forms continuous writes, the read data could be obsolete.
Action
Response
READ Data set
Data is read immediately from the drive
READ Parameter
Data is updated from the drive with the external
read interval.
WRITE Data set
Data is written immediately to the drive. The va-
lidity of write (value range and address range) is
checked, and if violation, an exception is gener-
ated.
WRITE Parameter
Data is written directly to the drive. The validity
of write (value range and address range) is
checked, and if violation, an exception is gener-
ated.
Содержание NMBP-01
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