Siemens SICAM Q80 System Manual page 80

80 SICAM Q80 7KG8080
Data High – Register 108
Data Low – Register 108
Data High – Register 109
Data Low – Register 109
Values: Register 107: 0x02 2B = 555; Register 108=0; Register 109: 0x0064 = 100
Overview of some function numbers
Function
Function designation
number
1 Read Coil
3 Read Holding Registers
4 Read Input Register
5 Write Single Coil
6 Write Single Register
15 Write Multiple Coils
16 Write Multiple Registers
Numbers supported by SICAM Q80: 1,3,4,5
Error messages
Error code
1 ILLEGAL_FUNCTION
2 ILLEGAL_DATA_ADDRESS
3 ILLEGAL_DATA_VALUE
Power Quality Recorder SICAM Q80 7KG8080, System manual
E50417-H1076-C420-A2, Release 12.01.2015
00
00
00
64
Description
reads one coil
Reads one or multiple of the Modbus-Slave's holding-registers.
The holding-registers contain device status messages,
measurement values, mean values and counting values, and
more
Maximum count of registers to read
- a maximum of 60 float registers can be read with one telegram
Reads an input-register
Writes one coil
Writes a holding-register.
Writes multiple Coils
Writes one or more holding-registers.
Maximum count of registers to write?
Description
The Modbus-Master has used a function which is not
supported by SICAM Q80 (see supported Modbus-
functions).
E.g. Function numbers:
-WriteSingleRegister
-ReadExceptionStatus
-Diagnostic
-GetComEventCounter
-GetComEventLog
-WriteMultipleRegisters
-ReportSlaveID
-ReadFileRecord
-WriteFileRecord
-MaskWriteRegister
-ReadWriteMultipleRegisters
-ReadFifoQueue
-ReadDeviceID
The Modbus-Master has addressed a register for which
there is no entry, meaning, one which is not occupied.
The Modbus-Master has attempted to write to a register
which is read-only.
An incorrect parameter value has been entered, e.g. an
invalid value when setting a bit