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Display Filter Reference: Modbus/TCP

Protocol field name: mbtcp

Versions: 1.0.0 to 4.2.3

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Field name Description Type Versions
mbtcp.cannot_classifyCannot classify packet type. Try setting Modbus/TCP Port preference to this destination or source portLabel2.2.0 to 4.2.3
mbtcp.lenLengthUnsigned integer (16 bits)1.8.0 to 4.2.3
mbtcp.modbus.and_maskAND maskUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.bit_cntbit countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.byte_cntbyte countUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.byte_cnt_16byte count (16-bit)Unsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.conformity_levelConformity LevelUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.dataDataByte sequence1.8.0 to 1.8.15
mbtcp.modbus.diagnostic_codediagnostic codeUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_countevent countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_msg_countmessage countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_recv_broadcastBroadcast ReceivedUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_recv_char_overCharacter OverrunUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_recv_comm_errCommunication ErrorUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_recv_lo_modeCurrently in Listen Only ModeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_lo_modeCurrently in Listen Only ModeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_read_exRead Exception SentUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_slave_abort_exSlave Abort Exception SentUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_slave_busy_exSlave Busy Exception SentUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_slave_nak_exSlave Program NAK Exception SentUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_send_write_timeoutWrite Timeout Error OccurredUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.ev_statusstatusUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.exception_codeexception codeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.func_codefunction codeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.meiMEI typeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.more_followsMore FollowsUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.next_object_idNext Object IDUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.num_objectsNumber of ObjectsUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.object_idObject IDUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.object_str_valueObject String ValueCharacter string1.8.0 to 1.8.15
mbtcp.modbus.objects_lenObject lengthUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.or_maskOR maskUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.read_device_idRead Device IDUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.read_reference_numread reference numberUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.read_word_cntread word countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.reference_numreference numberUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.reference_num_32reference number (32 bit)Unsigned integer (32 bits)1.8.0 to 1.8.15
mbtcp.modbus.reference_typereference typeUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.unit_idunit identifierUnsigned integer (8 bits)1.8.0 to 1.8.15
mbtcp.modbus.word_cntword countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.write_reference_numwrite reference numberUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.modbus.write_word_cntwrite word countUnsigned integer (16 bits)1.8.0 to 1.8.15
mbtcp.prot_idProtocol IdentifierUnsigned integer (16 bits)1.8.0 to 4.2.3
mbtcp.trans_idTransaction IdentifierUnsigned integer (16 bits)1.8.0 to 4.2.3
mbtcp.unit_idUnit IdentifierUnsigned integer (8 bits)1.10.0 to 4.2.3
modbus_tcp.and_maskAND maskUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.bit_cntbit countUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.byte_cntbyte countUnsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.byte_cnt_16byte count (16-bit)Unsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.dataDataByte sequence1.6.0 to 1.6.16
modbus_tcp.exception_codeexception codeUnsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.func_codefunction codeUnsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.lenlengthUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.or_maskOR maskUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.prot_idprotocol identifierUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.read_reference_numread reference numberUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.read_word_cntread word countUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.reference_numreference numberUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.reference_num_32reference number (32 bit)Unsigned integer (32 bits)1.0.0 to 1.6.16
modbus_tcp.reference_typereference typeUnsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.trans_idtransaction identifierUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.unit_idunit identifierUnsigned integer (8 bits)1.0.0 to 1.6.16
modbus_tcp.word_cntword countUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.write_reference_numwrite reference numberUnsigned integer (16 bits)1.0.0 to 1.6.16
modbus_tcp.write_word_cntwrite word countUnsigned integer (16 bits)1.0.0 to 1.6.16