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5. USER DIGITAL COMMUNICATIONDigital Communication5.1. GENERALThe Q7000 has to communication ports : ‘Config.iTools’ and ‘COM.User’‘Config.iTools’ - Configuration and diagnostic portQ7000 configuration and use are possible using iTools, with a specific link on Q7000 front panel, RJ 11 conector.iTools software can be downloaded from :http://www.eurotherm.co.uk/eng/eurothermproducts/software tools/iTools.htmProtocol :ModBus RTUTransmission Standards : RS 232Transmission Speed : 19200 Bauds‘COM.User’ - User portQ7000 Configuration and and use are possible using the COM.User connector.Protocols :ModBus RTU, ProfiBus or DeviceNet*Transmission Standards : RS 485Transmission Speed : 9600 or 19200 Bauds (Dip switch selection) ModBus protocolfrom 9,6 to 1500 Kbauds (AUTO selection) ProfiBus protocolAsynchronous TransmissionParameter StatusThe parameter status can be : Read only, Read and Write or Memorised Read/Write (non volatile Write)• Read only parameters are labelled ‘R’• Read and Write parameters are labelled ‘R/W’• Memorised Read and Write parameters are labelled ‘R/W/M’Exchange typeMessage are exchanged in ‘Master/Slave’ mode.The Q7000 digital communication always operates as a slave, with a supervision system or PLC as Master.Each exchange includes a Master request and a Slave answer.Important !If using the ‘COM.User’ digital communication port, it is possible to use the ‘Config.iTools’ port for the loadsdiagnosis, for example. However, it is recommended to the ‘Config.iToold’ port in reading mode only, inorder toavoid any communication conflict between the two ports.5.2. ModBus protocolWord reading, function 3 and 4, Word writing, function 6, n words writing (1