Title: 36 Siemens GDB181-MO.pdf.pdf
The basic task of engineering comprises implementation of the data model into a VAV application, especially setpoint and actual values (flow and position) for monitoring and optimization. System limitations of Modbus RTU / RS-485 apply, especially number of devices per segment and cable lengths depending on the baudrate.The data model is documented as Modbus register list, cf. 10.1 .7.3 Commissioning 7.3.1 PreconditionsThe beginning of the commissioning phase assumes that all VAV Compact Controllers are mounted according to the mounting instruction [2] as well as all other devices according to their mounting instructions.All devices must be connected to the power supply and bus cabling. Power supply and bus cabling must be tested, especially the communication between setpoint sender and setpoint receiver.Commissioning of VAV Compact Controllers consists of two parts:Commissioning of the VAV control function (cf. sections 6.1 and 6.2),Commissioning of the network integration.