Title: 32 Pumper modbuss teknisk data.pdf.pdf
14.3.2 CIM/CIU 500 Modbus TCP communication faultsFaultPossible cause1. The slave does not respond toa) Configuration or wiring error.telegrams.2. The slave responds with exception response 0x01 "Invalid function".a) The master is trying to use anunsupported function in CIM/CIU 500.3. The slave responds with exception response 0x02 "Invalid data address".3. The slave responds with exception response 0x02 "Invalid data address".a) The master is trying to read or write an invalid data address. If a master tries to read register addresses that are not listed in the tables, the slave responds with this exception response. Some masters may automatically try to read large blocks in one telegram, which will cause problems if some of the registers in the block are not supported. An example would be reading the CIM configuration and CIM status blocks in one telegram. This is not possible since there are unused addresses among the blocks.b) The register address offset may have