Bender COMTRAXX COM462RTU, Manual

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4 COM462RTU_D00010_04_M_XXDE / 06.2021
6 Modbus process image in the memory of the COM462RTU .. 21
6.1 Querying data .............................................................................................................. 21
6.1.1 Modbus function code ............................................................................................. 21
6.1.2 How are the memory areas organised? ............................................................. 21
6.2 Memory scheme of the process image .............................................................. 22
6.2.1 BMS device address assignment on the Modbus .......................................... 22
6.2.2 Memory scheme of an individual BMS device ................................................ 22
6.2.3 Device type ................................................................................................................... 24
6.2.4 Timestamp .................................................................................................................... 24
6.2.5 Common alarm and device failure ...................................................................... 25
6.2.6 Channels 1 to 32 with analogue and/or digital values ................................ 25
6.2.6.1 Float = Floating point value of the BMS channels ....................................................25
6.2.6.2 AT&T = Alarm type and test type (internal/external) ...............................................26
6.2.6.3 R&U = Bereich und Einheit .................................................................................................27
6.2.6.4 Channel description .............................................................................................................28
6.2.6.5 Channel 33 to 64 ....................................................................................................................29
6.3 Reference data records of the process image ................................................. 29
6.3.1 Address assignment of the reference data record ........................................ 30
6.3.2 Reference value on channel 1 ............................................................................... 30
6.3.3 Reference value on channel 2 ............................................................................... 30
6.3.4 Explanation of how to access floating point values ..................................... 31
6.4 Channel descriptions for the process image ................................................... 31
6.5 Modbus control commands ................................................................................... 37
7 Technical data .................................................................................. 40
7.1 Tabular data ................................................................................................................. 40
7.2 Dimension diagram ................................................................................................... 41
7.3 Standards, approvals, certifications .................................................................... 42
7.4 Ordering details .......................................................................................................... 42
8 Troubleshooting .............................................................................. 43
8.1 Malfunctions ................................................................................................................ 43
8.2 What should be checked? ....................................................................................... 43
8.3 Where to find help? ................................................................................................... 43