Display Filter Reference: Modbus/TCP
Protocol field name: mbtcp
Versions: 1.0.0 to 3.4.5
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| Field name | Description | Type | Versions |
|---|---|---|---|
| mbtcp.cannot_classify | Cannot classify packet type. Try setting Modbus/TCP Port preference to this destination or source port | Label | 2.2.0 to 3.4.5 |
| mbtcp.len | Length | Unsigned integer, 2 bytes | 1.8.0 to 3.4.5 |
| mbtcp.modbus.and_mask | AND mask | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.bit_cnt | bit count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.byte_cnt | byte count | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.byte_cnt_16 | byte count (16-bit) | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.conformity_level | Conformity Level | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.data | Data | Sequence of bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.diagnostic_code | diagnostic code | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_count | event count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_msg_count | message count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_recv_broadcast | Broadcast Received | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_recv_char_over | Character Overrun | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_recv_comm_err | Communication Error | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_recv_lo_mode | Currently in Listen Only Mode | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_lo_mode | Currently in Listen Only Mode | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_read_ex | Read Exception Sent | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_slave_abort_ex | Slave Abort Exception Sent | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_slave_busy_ex | Slave Busy Exception Sent | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_slave_nak_ex | Slave Program NAK Exception Sent | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_send_write_timeout | Write Timeout Error Occurred | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.ev_status | status | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.exception_code | exception code | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.func_code | function code | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.mei | MEI type | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.more_follows | More Follows | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.next_object_id | Next Object ID | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.num_objects | Number of Objects | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.object_id | Object ID | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.object_str_value | Object String Value | Character string | 1.8.0 to 1.8.15 |
| mbtcp.modbus.objects_len | Object length | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.or_mask | OR mask | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.read_device_id | Read Device ID | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.read_reference_num | read reference number | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.read_word_cnt | read word count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.reference_num | reference number | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.reference_num_32 | reference number (32 bit) | Unsigned integer, 4 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.reference_type | reference type | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.unit_id | unit identifier | Unsigned integer, 1 byte | 1.8.0 to 1.8.15 |
| mbtcp.modbus.word_cnt | word count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.write_reference_num | write reference number | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.modbus.write_word_cnt | write word count | Unsigned integer, 2 bytes | 1.8.0 to 1.8.15 |
| mbtcp.prot_id | Protocol Identifier | Unsigned integer, 2 bytes | 1.8.0 to 3.4.5 |
| mbtcp.trans_id | Transaction Identifier | Unsigned integer, 2 bytes | 1.8.0 to 3.4.5 |
| mbtcp.unit_id | Unit Identifier | Unsigned integer, 1 byte | 1.10.0 to 3.4.5 |
| modbus_tcp.and_mask | AND mask | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.bit_cnt | bit count | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.byte_cnt | byte count | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.byte_cnt_16 | byte count (16-bit) | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.data | Data | Sequence of bytes | 1.6.0 to 1.6.16 |
| modbus_tcp.exception_code | exception code | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.func_code | function code | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.len | length | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.or_mask | OR mask | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.prot_id | protocol identifier | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.read_reference_num | read reference number | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.read_word_cnt | read word count | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.reference_num | reference number | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.reference_num_32 | reference number (32 bit) | Unsigned integer, 4 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.reference_type | reference type | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.trans_id | transaction identifier | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.unit_id | unit identifier | Unsigned integer, 1 byte | 1.0.0 to 1.6.16 |
| modbus_tcp.word_cnt | word count | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.write_reference_num | write reference number | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
| modbus_tcp.write_word_cnt | write word count | Unsigned integer, 2 bytes | 1.0.0 to 1.6.16 |
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