# Slot 4 Menu 11 − Synchronisation

Mode: Open‑Loop

Note: Synchronous Cyclic Links are supported on the Unidrive M onboard Ethernet interface but not on SI-Ethernet on Unidrive M200 - M600.

Parameter | 4.11.001 Preferred Sync Master
--- | ---
Short description | Defines the module's synchronisation master preferences
Minimum | 0 | Maximum | 4
Default | 1 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, BU

Parameter | 4.11.002 Master Clock Domain
--- | ---
Short description | Specifies the clock domain for the grandmaster clock
Minimum | 0 | Maximum | 3
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, BU

Specifies the clock domain for the module to act as a grandmaster clock.

Parameter | 4.11.005 Grandmaster MAC Address
--- | ---
Short description | Displays the MAC address of the synchronisation grandmaster
Minimum | 0 (Display: 00:00:00:00:00:00) | Maximum | 18446744073709551615 (Display: FF:FF:FF:FF:FF:FF)
Default |  | Units |
Type | 64 Bit Volatile | Update Rate | Background write
Display Format | MAC Address | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

This parameter displays the MAC address, as a 64-bit hexadecimal value, of the synchronisation grandmaster (if there is a grandmaster).

Parameter | 4.11.006 Synchronisation Jitter From Grandmaster
--- | ---
Short description | Displays the jitter from the grandmaster
Minimum | -2147483648 | Maximum | 2147483647
Default |  | Units | ns
Type | 32 Bit Volatile | Update Rate | Written every 500ms
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT

This parameter displays the synchronisation jitter in nanoseconds. The value is filtered to be human readable.

Parameter | 4.11.007 Synchronisation Jitter Threshold
--- | ---
Short description | Synchronisation Jitter Threshold
Minimum | 500 | Maximum | 1000000
Default | 1000 | Units | ns
Type | 32 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, BU

Sets the application tolerable clock jitter in ns from the grandmaster. If Synchronisation Jitter From Grandmaster (4.11.006) is within the tolerance the local clock is synchronised to the grandmaster and synchronsied cyclic data links will be processed.

Parameter | 4.11.008 Module Synchronised Flag
--- | ---
Short description | Module synchronised flag
Minimum | 0 | Maximum | 1
Default | 0 | Units |
Type | 1 Bit Volatile | Update Rate | Written every 10ms
Display Format | Standard | Decimal Places | 0
Coding | RO

The parameter displays the module's synchronisation status. 1 = Synhronised, 0 = Not synchronised.

Parameter | 4.11.009 Inhibit Drive Synchronisation
--- | ---
Short description | Specifies whether the module should synchronise with the grandmaster
Minimum | 0 | Maximum | 1
Default | 0 | Units |
Type | 1 Bit User Save | Update Rate | Immediate
Display Format | Standard | Decimal Places | 0
Coding | RW

This parameter controls whether the module synchronises the OPT_SYNC with the network grandmaster. A value of ON inhibits this.

Parameter | 4.11.010 PTP Date
--- | ---
Short description | PTP Date
Minimum | 0 (Display: 00-00-00) | Maximum | 311299 (Display: 31-12-99)
Default |  | Units |
Type | 32 Bit Volatile | Update Rate | Written every 500ms
Display Format | Date | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

This parameter displays the current date. If the module has no time source it will display the date based on its power-up date of 1st January 1970.

Parameter | 4.11.011 PTP Time
--- | ---
Short description | PTP Time
Minimum | 0 (Display: 00:00:00) | Maximum | 235959 (Display: 23:59:59)
Default |  | Units |
Type | 32 Bit Volatile | Update Rate | Written every 500ms
Display Format | Time | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

This parameter displays the current time. If the module has no time source it will display the date based on its power-up date of 00:00:00.

Parameter | 4.11.015 PTP Delay Measurement Select
--- | ---
Short description | PTP delay measurement select
Minimum | 1 | Maximum | 2
Default | 1 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
1 | P2P DELAY | Peer-to-peer delay
2 | OFF | Delay off

In Factory Fit Ethernet / SI-Ethernet firmare V01.03.00.00 onwards, this parameter is no longer supported. PTP Delay Measurement is always Peer-to-Peer.

> This parameter selects the delay measurement. 0 = End-to-end; 1 = Peer-to-peer, 2 = OFF

> End-to-end is the delay mechanism between slave clocks and the master clock.

> Peer-to-peer delay mechanism provides not only the PTP event transit time information, but also provides the corrections for the propagation delay of the link connected to the port receiving the PTP event message.

> OFF disables the PTP messages so that the module will not respond to a PTP delay request message or initiate a PTP delay request message and will therefore not synchronise with the master.

Parameter | 4.11.016 PTP Sync Rate
--- | ---
Short description | PTP Sync rate
Minimum | -4 | Maximum | 0
Default | -4 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW

This parameter controls the rate at which PTP Sync frames are sent. the message rate is determined by raising 2 to the power of this parameter. E.g the default value here of -2 results in four sync messages per second.

Parameter | 4.11.017 In sync window length
--- | ---
Short description |
Minimum | 3 | Maximum | 255
Default | 20 | Units | s
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, BU

Duration that the jitter Synchronisation Jitter From Grandmaster (4.11.006) must be below the jitter threshold for before the in sync flag Module Synchronised Flag (4.11.008) is set.

For a system the duration depends upon the number of IEEE1588 capable master on the network. To use lower values here the number of devices who are capable of acting as a synchronisation master must be kept as low as possible by setting Preferred Sync Master (4.11.001) to 0 on all interfaces except those who may be master.

Parameter | 4.11.020 Network Error Count
--- | ---
Short description | Displays the number of errors detected on the network
Minimum | 0 | Maximum | 4294967295
Default |  | Units |
Type | 32 Bit Volatile | Update Rate | Written every 500ms
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

The parameter displays a count of network errors since startup. It can be used as an indication of a problem.

Parameter | 4.11.022 Interoption Sync Status
--- | ---
Short description | Interoption Sync Status
Minimum | 0 | Maximum | 2
Default |  | Units |
Type | 8 Bit Volatile | Update Rate | Background
Display Format | Standard | Decimal Places | 0
Coding | RO, TE, ND, NC, PT, BU

This module does not support Slave mode

Value | Text | Description
0 | MASTER | The module is master but not producing
1 | PRODUCER | The module is master and producing
2 | INDEPENDENT | The module is not master

Parameter | 4.11.030 Easy Mode Maximum Network Delay
--- | ---
Short description | Defines the maximum allowable delay for Easy Mode cyclic transmit links
Minimum | 1 | Maximum | 100
Default | 3 | Units | ms
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, BU

This defines the allowable network delay (in milliseconds) for the Easy Mode synchronous transmit cyclic links to arrive at their destination.

In Factory Fit Ethernet / SI-Ethernet firmare V01.03.00.00 onwards, the default delay has been changed to 3ms (previous value 0ms). If the old default of 0ms is encountered, this is automatically changed to 3ms as the new minimum is 1ms).

Parameter | 4.11.040 Rx1 Late Synchronisation Frame Action
--- | ---
Short description | Defines the action to take when synchronised frame is received late
Minimum | 1 | Maximum | 3
Default | 1 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
1 | Trip | Trip drive with Slx.Er and sub-trip code
2 | Do not use | The data is ignored
3 | Use | The data is used immediately

This parameter defines the action to be taken when a late synchronised frame is received.

In Factory Fit Ethernet / SI-Ethernet firmare V01.03.00.00 onwards there are a reduced range of actions. Since the option zero has been deprecated, the new default action is Trip (1st option).

Parameter | 4.11.041 Rx1 Late Synchronisation Frame Destination
--- | ---
Short description | Sets the slot to trigger an event
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | This slot | Trigger module event in this slot
1 | Slot 1 | Trigger module event in slot 1
2 | Slot 2 | Trigger module event in slot 2
3 | Slot 3 | Trigger module event in slot 3
4 | Slot 4 | Trigger module event in slot 4

Defines the destination (slot) to trigger the event when a late synchronised frame is received.

Parameter | 4.11.042 Rx1 Late Synchronisation Frame Event
--- | ---
Short description | Sets the event number to trigger
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | No Event | No event
1 | Event | Trigger module event
2 | Event1 | Trigger module event 1
3 | Event2 | Trigger module event 2
4 | Event3 | Trigger module event 3

Defines the event number to trigger in the given destination (slot) when a late synchronised frame is received.

Parameter | 4.11.050 Rx2 Late Synchronisation Frame Action
--- | ---
Short description | Defines the action to take when synchronised frame is received late
Minimum | 1 | Maximum | 3
Default | 1 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
1 | Trip | Trip drive with Slx.Er and sub-trip code
2 | Do not use | The data is ignored
3 | Use | The data is used immediately

This parameter defines the action to be taken when a late synchronised frame is received.

In Factory Fit Ethernet / SI-Ethernet firmare V01.03.00.00 onwards there are a reduced range of actions. Since the option zero has been deprecated, the new default action is Trip (1st option).

Parameter | 4.11.051 Rx2 Late Synchronisation Frame Destination
--- | ---
Short description | Sets the slot to trigger an event
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | This slot | Trigger module event in this slot
1 | Slot 1 | Trigger module event in slot 1
2 | Slot 2 | Trigger module event in slot 2
3 | Slot 3 | Trigger module event in slot 3
4 | Slot 4 | Trigger module event in slot 4

Defines the destination (slot) to trigger the event when a late synchronised frame is received.

Parameter | 4.11.052 Rx2 Late Synchronisation Frame Event
--- | ---
Short description | Sets the event number to trigger
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | No Event | No event
1 | Event | Trigger module event
2 | Event1 | Trigger module event 1
3 | Event2 | Trigger module event 2
4 | Event3 | Trigger module event 3

Defines the event number to trigger in the given destination (slot) when a late synchronised frame is received.

Parameter | 4.11.060 Rx3 Late Synchronisation Frame Action
--- | ---
Short description | Defines the action to take when synchronised frame is received late
Minimum | 1 | Maximum | 3
Default | 1 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
1 | Trip | Trip drive with Slx.Er and sub-trip code
2 | Do not use | The data is ignored
3 | Use | The data is used immediately

This parameter defines the action to be taken when a late synchronised frame is received.

In Factory Fit Ethernet / SI-Ethernet firmare V01.03.00.00 onwards there are a reduced range of actions. Since the option zero has been deprecated, the new default action is Trip (1st option).

Parameter | 4.11.061 Rx3 Late Synchronisation Frame Destination
--- | ---
Short description | Sets the slot to trigger an event
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | This slot | Trigger module event in this slot
1 | Slot 1 | Trigger module event in slot 1
2 | Slot 2 | Trigger module event in slot 2
3 | Slot 3 | Trigger module event in slot 3
4 | Slot 4 | Trigger module event in slot 4

Defines the destination (slot) to trigger the event when a late synchronised frame is received.

Parameter | 4.11.062 Rx3 Late Synchronisation Frame Event
--- | ---
Short description | Sets the event number to trigger
Minimum | 0 | Maximum | 4
Default | 0 | Units |
Type | 8 Bit User Save | Update Rate | Read on reset
Display Format | Standard | Decimal Places | 0
Coding | RW, TE, BU

Value | Text | Description
0 | No Event | No event
1 | Event | Trigger module event
2 | Event1 | Trigger module event 1
3 | Event2 | Trigger module event 2
4 | Event3 | Trigger module event 3

Defines the event number to trigger in the given destination (slot) when a late synchronised frame is received.