Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Fieldbus | Bus power | Cabling redundancy | Synchronisation | Sub millisecond cycle |
| --- | --- | --- | --- | --- |
| AFDX | No | Yes | No | Unknown |
| AS-Interface | Yes | No | No | No |
| CANopen | No | No | Yes | No |
| CompoNet | Yes | No | No | Yes |
| ControlNet | No | Yes | No | No |
| CC-Link | No | No | No | No |
| DeviceNet | Yes | No | No | No |
| EtherCAT | No | Yes | Yes | Yes |
| Ethernet Powerlink | No | Optional | Yes | Yes |
| EtherNet/IP | No | Optional | Yes | No |
| Interbus | No | No | No | No |
| LonWorks | No | No | No | No |
| Modbus | No | No | No | No |
| PROFIBUS DP | No | Optional | Yes | No |
| PROFIBUS PA | Yes | No | No | No |
| PROFINET IO | No | Optional | No | No |
| PROFINET IRT | No | Optional | Yes | Yes |
| SERCOS III | No | Yes | Yes | Yes |
| SERCOS interface | No | No | Yes | Yes |
| Foundation Fieldbus H1 | Yes | No | Yes | No |
| Foundation Fieldbus HSE | No | Yes | Yes | No |
| RAPIEnet | No | Yes | Under Development | Conditional |
| Fieldbus | Bus power | Cabling redundancy | Synchronisation | Sub millisecond cycle |
Question:
What is the millisecond cycle for the Fieldbus?
Answer:
Sub millisecond cycle