Synchronization and Time recording
124
A4354-2.2
HBM: public
PMX
9.2
External synchronous measurement
acquisition via an NTP server in the
network
If synchronous measurements are to be performed by
different measurement systems, an external master is
required for synchronous acquisition.
Each PMX module has an NTP time that can be set by
an external NTP server. The NTP time is distributed to all
the modules over the Ethernet (TCP/IP) connection.
The PMX modules now transfer their measured values
with the counter signal and NTP time. The DAQ systems
can then use this information to synchronously acquire
the measured values of all the devices.
When operating the PMX and other devices, it is then
possible to achieve accuracies of 1 ms and better. But
this depends on the utilization of the particular network,
as well as on the quality of the NTP master. An NTP soft
ware package is included with the HBM software
catman®EASY.
Time format used
Based on
1.1.1990
Time stamp:
64‐bit
32‐bit seconds
32‐bit fractions of a second,
Resolution (1/232)
Further information about NTP can be found at
Summary of Contents for PX401
Page 1: ...Operating Manual English PMX...
Page 104: ...Electrical connections PMX 104 A4354 2 2 HBM public PMX...
Page 141: ...Startup PMX A4354 2 2 HBM public 141 Network settings...
Page 239: ...Internal calculation channels PMX A4354 2 2 HBM public 239...
Page 241: ...Internal calculation channels PMX A4354 2 2 HBM public 241...
Page 246: ...Internal calculation channels 246 A4354 2 2 HBM public PMX...
Page 264: ...Internal calculation channels 264 A4354 2 2 HBM public PMX...
Page 272: ...Parameter sets measurement programs 272 A4354 2 2 HBM public PMX...
Page 295: ...Communication with a control system PMX A4354 2 2 HBM public 295...
Page 297: ...Communication with a control system PMX A4354 2 2 HBM public 297...
Page 300: ...Communication with a control system 300 A4354 2 2 HBM public PMX...
Page 376: ...CODESYS V3 Soft PLC WGX001 only 376 A4354 2 2 HBM public PMX...
Page 378: ...CODESYS V3 Soft PLC WGX001 only 378 A4354 2 2 HBM public PMX...
Page 381: ...CODESYS V3 Soft PLC WGX001 only PMX A4354 2 2 HBM public 381...
Page 392: ...CODESYS V3 Soft PLC WGX001 only 392 A4354 2 2 HBM public PMX Dialog Updating the PMX device...
Page 489: ...Object directory PMX A4354 2 2 HBM public 489...
Page 523: ...Diagnosis and maintenance PMX A4354 2 2 HBM public 523 Network settings...