Operation through
MODBUS RTU
44
07/09 MN03407002Z-EN
Access methods to the
register areas
The data of the SmartWire stations are mapped to the
holding register of the SWIRE-GW-MB. Normally, the
holding register area can be both read and written to. Some
data areas (such as the SmartWire stations’ status data) are
read-only. For any write operations to read-only areas the
MODBUS RTU gateway returns an error code.
Table 27: Access methods to the register areas
Designation
Register area
Access method
Abbreviated control data
40001 - 40002
write/read access
Complete control data
40003 - 40006
write/read access
Abbreviated status data 1
40007 - 40008
read access
Check bits
40009
read access
Abbreviated status data 2
40010 - 40013
read access
Complete status data
40014 - 40077
read access
Life bits
40078
read access
Manufacturer and device ID
40079 - 40142
read access
Number of SmartWire units
40143
read access
MODBUS timer (non-retentive)
44097
write/read access
MODBUS-Timer (remanent)
44098
write/read access
Summary of Contents for SWIRE-GW-MB
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