Title: 32 Pumper modbuss teknisk data.pdf.pdf
a) No internal communication betweenCIU 200 and the E-pumpa) CIU 200 does not support the E-pump which is connected.a) Fault in the CIM 200 Modbusconfiguration.a) Fault in the Modbus communication (fault in parity or cyclic redundancy check).Ensure that CIM 200 is fitted and connected correctly.Replace CIM 200.Ensure that CIM 200 is fitted correctly in the Grundfos E- pump.Contact the nearest Grundfos company.Check the transmission speed, switches SW4 and SW5. If the switches are set to "software-defined", an invalid value may have been set via Modbus. Try one of the preselected transmission speeds, for example 19200 bit/ s.Check that the Modbus address, switches SW6 and SW7, has a valid value [1-247].Check that the Modbus address, switches SW6 and SW7, has a valid value [1-247].Check the transmission speed, switches SW4 and SW5. See section 5.1 Setting the Modbus transmission speed.Check the parity setting, switch SW3. See section 5.2 Setting the stop bits and the parity bit.