Bender ISOMETER isoCHA425HV Manual page 4

3.3 Wiring diagram ........................................................................................................... 16
3.4 Commissioning ........................................................................................................... 17
4 Operation of the device ................................................................. 19
4.1 Displays and buttons ................................................................................................ 19
4.2 Menu overview ........................................................................................................... 20
4.3 "AL" menu ..................................................................................................................... 21
4.3.1 Setting response value ............................................................................................. 21
4.4 "out" menu.................................................................................................................... 21
4.4.1 Relay mode configuration ...................................................................................... 21
4.4.2 Relay alarm assignment "r1" and "r2" and LED assignment ....................... 21
4.4.3 Fault memory configuration .................................................................................. 22
4.4.4 Interface configuration ............................................................................................ 22
4.5 "t" menu ......................................................................................................................... 23
4.5.1 Time configuration .................................................................................................... 23
4.6 "SEt" menu .................................................................................................................... 23
4.6.1 Function configuration ............................................................................................ 23
4.7 Measured value display and history memory ................................................. 24
5 Data access using the BMS protocol ........................................... 25
6 Data access using the Modbus RTU protocol ............................ 27
6.1 Reading out Modbus registers from the ISOMETER® .................................... 27
6.2 Command of the master to the ISOMETER® .................................................... 27
6.2.1 Response of the ISOMETER® to the master ...................................................... 27
6.3 Writing to Modbus registers (parameter setting) .......................................... 27
6.3.1 The master sends a command to the ISOMETER® ......................................... 27
6.3.2 Response of the ISOMETER® to the master ...................................................... 28
6.4 Exception code ........................................................................................................... 28
6.4.1 Structure of the exception code ........................................................................... 28
7 Modbus register assignment of the ISOMETER® ...................... 29
7.1 Device-specific data type of the ISOMETER® ................................................... 31
7.1.1 Device name ................................................................................................................ 31
7.1.2 Measured values ......................................................................................................... 32
7.1.2.1 Float = Floating point value of the channels ..............................................................32
7.1.2.2 AT&T = Alarm type and test type (internal/external) ...............................................33
7.1.2.3 R&U = Range and unit .........................................................................................................34
7.1.3 Alarm assignment of the relays ............................................................................ 35
7.2 Channel descriptions ................................................................................................ 35
8 IsoData data string ......................................................................... 37
9 Technical data .................................................................................. 39
9.1 Standards, approvals and certifications............................................................. 43
9.2 Ordering information ............................................................................................... 43
9.3 Declaration of Conformity ...................................................................................... 44
4 isoCHA425HV_D00404_00_M_XXEN / 10.2020