All rights reserved Side 2 af 16Connection:The Modbus is connected to PIN 2,3,6 on CN7 placed next to the USB port of the printed circuitboardPin 1 12 VDC outputPin 2 COM1 - RS 485 A - ModbusPin 3 COM1 - RS 485 B - ModbusPin 4 COM2 - RS 485 A - User panelPin 5 COM2 - RS 485 B - User panelPin 6 GroundSetup:Protocol Modbus (RTU mode), see http://www.modbus.org/specs.phpNode address Default 30, Address is selectable between 1 and 247To be changed I SERVICE Menu.Device type CTS 602 is a Modbus slaveBaud rate 19.200Databits 8Stopbits 1Parity EvenPacket size Max. 255 bytesThe communication speed and parameter can not be changed.Supported functions:Input and holding registers are supported.All registers are 16 bit size.The controller will respond to the below listed Modbus message functions only.Please note that no other function codes are supported.Function Name Description03 Read Holding Registers Read one or more holding registers04 Read Input Registers Read one or more input registers16 Preset Multiple Registers Write one or more holding registers