GE TRANSFIX DGA 500, User Manual

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MA-014 - TRANSFIX DGA 500 User Guide – Rev 1.1 13-Oct-15 Page 27 of 28
A.2.2 UNIX Time Example
For reference, the time on a device is reported in TransConnect as 12 Aug 2011 11:56:00
BST and the corresponding value in the registers mentioned above is 13146616.
When testing, please check that you are reading registers 1197-1198 (assuming
addresses start at 999 +1) and decoding an unsigned 32 bit big endian number. The
epoch time is in UTC. This matches the device time. An online converter e.g.
http://www.epochconverter.com/ can be used to verify.
A.2.3 Register Access Control
The product registers are protected with access flags. The register map details the
relevant access flags for each register. Each register may have one or more access flags,
separated by commas. Table A—3 lists the supported access flags:
Table A—3: Access flags
Access flags may be modified with the addition of the modifier flags listed in Table A—4.
Table A—4: Modifier flags
Flag Access Description
u User Only accessible if the master is authorised with user access
c Config Only accessible if master is authorised as config (commissioning) user
f Factory Only accessible if master is authorised as factory (service) user
Flag Access Description
r Read Read access to a single register
rgN Read group Read access to a group of length N (Nmax = 120)
w Write Write access to a single register
wgN Write group Write access to a group of length N (Nmax = 120)