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10.1
Tolerances / Specifications
10.1.1
Specifications of the Real Time Clock
Resolution:
1 ms
Tolerance:
<1 minute / month (+20°C [68°F])
<±1ms if synchronized via IRIG-B
Time Synchronization Tolerances
The different protocols for time synchronisation vary in their accuracy:
Used Protocol
Time drift over one
month
Deviation to time generator
Without time
synchronization
<1 min (+20°C)
Time drifts
IRIG-B
Dependent on the time drift
of the time generator
<±1 ms
SNTP
Dependent on the time drift
of the time generator
<±1 ms, if network connection is
GOOD (see operation status of SNTP)
Modbus TCP
Dependent on the time drift
of the time generator
Dependent on the network load
Modbus RTU
Dependent on the time drift
of the time generator
<±1 ms
DNP3 TCP
Dependent on the time drift
of the time generator
Dependent on the network load
DNP3 UDP
Dependent on the time drift
of the time generator
Dependent on the network load
DNP3 RTU
Dependent on the time drift
of the time generator
<±1 ms
Note that the availability of the protocols depends on the ordered variant of the
EMR-3MP0 (see
╚═▷ “Catalog Codes for the EMR-3MP0”
244
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EMR-3MP0
10 Technical Data EMR-3MP0
10.1 Tolerances / Specifications