Messages and diagnostics
7.2 Function Codes
SIRIUS 3RW5 Modbus TCP communication module
52 Manual, 03/2018, A5E43676481002A/RS-AA/001
Two memory areas are used in the 3RW5 Soft Starter:
● A memory area for addressing the bit information
● A memory area for addressing the register information
The Function Codes for bit information (01, 02, 05, 15) thus always access the bit memory
area. The Function Codes for register information (03, 04, 06, 16, 23) always access the
register memory area.
Whether information is read-only (r) or read/writeable (r/w) is stated in the data tables in
chapter Data tables (Page 75).
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