Modbusrtu; System Description For Connection To The Building Management System (Bms) - Helios LZD Series Installation And Operating Instructions Manual

Installation and Operating Instructions
NOTE
NOTE
Bearing Condition Diagnostic System LZD ...
– Recommended operation
It is not necessary to leave the bearing condition diagnostic system permanently switched on. It is sufficient to switch
on to check the bearing conditions during periodic inspections and maintenance. However, once the system has been
started, a complete warm-up phase of the motor/motor bearing to be checked must be observed to reach a steady
state.
The bearing conditions can only be evaluated once the motor's steady state has been reached.
4.3

ModbusRTU

– Hardware
ModbusRTU via RS485, galvanically isolated
– Addressing
Addressing via 2 coding switches from 1 (01) to 247 (F7)
Switch position 12 --> Address 18
(hex)
An address change shall only become effective after the unit has been restarted.
An address must not be duplicated within a smoke extraction installation!
This leads to communication errors due to address conflicts.
4.4

System description for connection to the building management system (BMS)

– Hardware basis
RS485, half-duplex, maximum 256 nodes per network (1/8 load), maximum cable length 400 m
– Characteristic values
Baud rates: 9600, 19200, 38400, 57600 --> Default 38400
Parities: None, even, uneven, --> Default None
– Supported functions
Read Input Registers (Code: 04)
Read/Write Output Register (Codes: 03, 06, 16)
– Polling
Poll time > 1sec
– Mapping
All values and parameters mapped on 16bit register
Address Register Designation
0 Error word
1 Status word
2 Raw value Sensor A
3 Raw value Sensor B
4 Raw value Sensor Unit
5 Type Sensor A
6 Type Sensor B
7 Type Sensor Unit
8 Firmware version
9 Serial number
(dec)
Values
0 = No fault – Unit OK
Bit1 = Fault Temperature Sensor 1
Bit2 = Fault Temperature Sensor 2
Bit3 = Fault Temperature Sensor Unit
Bit4 = Fault Interface board
Bit5 = EEPROM fault
Bit6 = Unit temperature too high
Bit7 = Unit temperature too low
Bit8 = Initialisation error Modbus
Bit9 = Fault Start Modbus
Bit10 = Read error Unit address
Bit11-16 = Unassigned
0 = No fault – Unit OK
Bit1 = Fault Temperature Sensor 1
Bit2 = Fault Temperature Sensor 2
Bit3 = Fault Temperature Sensor Unit
Bit4 = Fault Interface board
Bit5 = EEPROM fault
Bit6 = Unit temperature too high
Bit7 = Unit temperature too low
Bit8 = Initialisation error Modbus
Bit9 = Fault Start Modbus
Bit10 = Read error Unit address
Bit11-16 = Unassigned
7
UK
Unit min max
- 0 65535
- 0 65535
- 0 1023
- 0 1023
- 0 1023
°C
°C
°C
- 0 65535
- 0 65535