SI-Ethernet User Guide 79
Issue: 1
Safety
information
Introduction
Mechanical
installation
Electrical
installation
Getting started Parameters
Key features
and Protocols
PC Applications Security Diagnostics
Glossary of
terms
Index
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.
This parameter displays the current time. If the module has no time source it will display
the time based on its power-up time.
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 -
4 results in sixteen sync messages per second.
Duration that the jitter (Synchronisation Jitter From Grandmaster (S.11.006)) must be
below the jitter threshold for before the in sync flag (Module Synchronised Flag
(S.11.008)) is set.
For a system the duration depends upon the number of IEEE1588 capable master
devices on the network. To use lower values here the number of devices which are
capable of acting as a synchronization master must be kept as low as possible by
setting Preferred Sync Master (S.11.001) to 0 on all interfaces except those which may
be master.
S.11.010 PTP Date
Minimum
0
(Display: 00-00-00)
Maximum
311299
(Display: 31-12-99)
Default Units
Type 32 Bit Volatile Update Rate Written every 500 ms
Display Format Date Decimal Places 0
Coding RO, ND, NC, PT, BU
S.11.011 PTP Time
Minimum
0
(Display: 00:00:00)
Maximum
235959
(Display: 23:59:59)
Default Units
Type 32 Bit Volatile Update Rate Written every 500 ms
Display Format Time Decimal Places 0
Coding RO, ND, NC, PT, BU
S.11.016 PTP Sync Rate
Minimum -4 Maximum 0
Default -4 Units
Type 8 Bit User Save Update Rate Read on reset
Display Format None Decimal Places 0
Coding RW
S.11.017 In sync window length
Minimum 3 Maximum 255
Default 20 Units s
Type 8 Bit User Save Update Rate Read on reset
Display Format None Decimal Places 0
Coding RW, BU
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