Lenze ESVZAR0 RS-485 - Manual (Page 16)

14 CMVMB401C
Modbus Message
6.1.3 Message structure for reading one 32-bit register
Registers 511, 540 and 541 only
R SA 03 RH RL 00 02 CRCH CRCL
RS SA 03 04 DHH DHL DLH DLL CRCH CRCL
DHH and DHL are the high and low bytes of the high word (i.e. the first 16 bits) of the 32-bit register value
DLH and DLL are the high and low bytes of the low word (i.e. the last 16 bits) of the 32-bit register value
Example: Total Run-time Hours (Register #540) = 305419896 (12345678h)
R SA 03 01 FF 00 02 CRCH CRCL
RS SA 03 04 12 34 56 78 CRCH CRCL
6.1.4 Message structure for reading one 4 word register
Register 500 only
R SA 03 01 F4 00 04 CRCH CRCL
RS SA 08 D1 D2 D3 D4 D5 D6 D7 D8 CRCH CRCL
D1 holds the value of Fault 1 (the most recent fault in the fault history)
D2 holds the value of Fault 2 in the fault history
…
D8 holds Fault 8 (the oldest fault in the fault history).
6.1.5 Message structure for reading six 16-bit registers
Register 24 only
R SA 03 00 18 00 06 CRCH CRCL
RS SA 0C D1H D1L D2H D2L D3H D3L
D4H D4L D5H D5L D6H D6L CRCH CRCL
Operation Byte Register
Command Frequency D1H D1L Register #24 (DH DL)
Actual Frequency D2H D2L Register #25 (DH DL)
Load D3H Register #26 (DH)
Operation Status D3L Register #26 (DL)
Rotational Direction D4H Register #27 (DH)
Control Mode D4L Register #27 (DL)
Speed Command Source D5H Register #28 (DH)
Auto/Manual Status D5L Register #28 (DL)
Present Fault D6H Register #29 (DH)
Command Rotation D6L Register #29 (DL)