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Display Filter Reference: Modbus/TCP
Protocol field name: mbtcp
Versions: 1.0.0 to 1.6.5
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| Field name | Type | Description | Versions |
|---|---|---|---|
| modbus_tcp.and_mask | Unsigned integer, 2 bytes | AND mask | 1.0.0 to 1.6.5 |
| modbus_tcp.bit_cnt | Unsigned integer, 2 bytes | bit count | 1.0.0 to 1.6.5 |
| modbus_tcp.byte_cnt | Unsigned integer, 1 byte | byte count | 1.0.0 to 1.6.5 |
| modbus_tcp.byte_cnt_16 | Unsigned integer, 1 byte | byte count (16-bit) | 1.0.0 to 1.6.5 |
| modbus_tcp.data | Sequence of bytes | Data | 1.6.0 to 1.6.5 |
| modbus_tcp.exception_code | Unsigned integer, 1 byte | exception code | 1.0.0 to 1.6.5 |
| modbus_tcp.func_code | Unsigned integer, 1 byte | function code | 1.0.0 to 1.6.5 |
| modbus_tcp.len | Unsigned integer, 2 bytes | length | 1.0.0 to 1.6.5 |
| modbus_tcp.or_mask | Unsigned integer, 2 bytes | OR mask | 1.0.0 to 1.6.5 |
| modbus_tcp.prot_id | Unsigned integer, 2 bytes | protocol identifier | 1.0.0 to 1.6.5 |
| modbus_tcp.read_reference_num | Unsigned integer, 2 bytes | read reference number | 1.0.0 to 1.6.5 |
| modbus_tcp.read_word_cnt | Unsigned integer, 2 bytes | read word count | 1.0.0 to 1.6.5 |
| modbus_tcp.reference_num | Unsigned integer, 2 bytes | reference number | 1.0.0 to 1.6.5 |
| modbus_tcp.reference_num_32 | Unsigned integer, 4 bytes | reference number (32 bit) | 1.0.0 to 1.6.5 |
| modbus_tcp.reference_type | Unsigned integer, 1 byte | reference type | 1.0.0 to 1.6.5 |
| modbus_tcp.trans_id | Unsigned integer, 2 bytes | transaction identifier | 1.0.0 to 1.6.5 |
| modbus_tcp.unit_id | Unsigned integer, 1 byte | unit identifier | 1.0.0 to 1.6.5 |
| modbus_tcp.word_cnt | Unsigned integer, 2 bytes | word count | 1.0.0 to 1.6.5 |
| modbus_tcp.write_reference_num | Unsigned integer, 2 bytes | write reference number | 1.0.0 to 1.6.5 |
| modbus_tcp.write_word_cnt | Unsigned integer, 2 bytes | write word count | 1.0.0 to 1.6.5 |