Fieldbus Communication • 119MODBUS FunctionsWAGO-I/O-SYSTEM 750ETHERNET TCP/IPRegister address 0x1027 (MODBUS Address 404136)Designation Perform an internal bus cycleAccess ReadDescriptionRegister address 0x1028 (MODBUS Address 404137)Designation Activate/deactivate configuration via BootPAccess read / writeDescription 0: No BootP is used1: BootP is activeRegister address 0x1029 (MODBUS Address 404138, with a word count of upto 9)Designation MODBUS TCP statisticsAccess read / writeDescription 1 word SlaveDeviceFailure -> internal bus error, F-bus error byactivated watchdog1 word BadProtocol; -> error in the MODBUS TCP header1 word BadLength; -> Wrong telegram length2 words BadFunction;M -> Invalid function code2 words Bad Address; -> Invalid register address2 words BadData; -> Invalid value2 words TooManyRegisters; -> Number of the registers which can beworked on is too large, Read/Write125/1002 words TooManyBits -> Number of the coils which canbe worked on is too large, Read/Write2000/8002 words ModTcpMessageCounter-> Number of received MODBUS/TCPrequestsWith Writing 0xAA55 or 0x55AA in the register will reset this data area.Register address 0x1030 (MODBUS Address 404145, with a word count of 1)Designation Configuration MODBUS/TCP TimeoutAccess read / writeDefault 0x0000Description This is the maximum number of milliseconds the coupler will allow aModbus TCP connection to stay open without receiving a Modbus request.Upon timeout, idle connection will be closed. Outputs remain in last state.Default value is 0 (timeout disabled).Register address 0x1031 (MODBUS Address 404146, with a word count of 3)Designation Read the MAC-ID of the couplerAccess readDescription This register gives the MAC-ID, with a length of 3 words
