Eaton SWIRE-GW-MB, Manual, Page: 32 / 67

Operation through
MODBUS RTU
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07/09 MN03407002Z-EN
Data mapping of
SmartWire stations Within each MODBUS RTU device, the input and output level
data are stored in various registers (input register and
holding register).
For the MODBUS RTU gateway the status and control data
for the connected SmartWire stations are saved to the
holding register of the SWIRE-GW-MB, which contains the
following data:
• Status information (input data) of the SmartWire stations
• Control data (output data) of the SmartWire stations
• Parity bits of the SmartWire stations
• Device and manufacturer’s ID of the SmartWire stations
• Life bits of the SmartWire stations
• Number of connected SmartWire station
• Time value of the built-in MODBUS timer
This data is saved to the registers as follows:
Table 6: Data mapping in the SWIRE-GW-MB
Designation Register area Data width: Diagram
Abbreviated control
data 40001 - 40002 4 bytes two bits per SmartWire stations
Complete control data 40003 - 40006 8 bytes four bits per SmartWire station
Abbreviated
status data 1 40007 - 40008 4 bytes two bits per SmartWire stations
Check bits 40009 2 bytes 1bit per SmartWire station
Abbreviated
status data 2 40010 - 40013 8 bytes four bits per SmartWire station
Complete status data 40014 - 40077 128 bytes eight bits per SmartWire station
Life bits 40078 2 bytes 1bit per SmartWire station
Station ID 40079 - 40142 128 bytes eight bits per SmartWire station