GE Kelman DGA900 - Page 86

MA-025 – DGA 900 Operator Guide – Rev 2.0 12-Apr-19 Page 86 of 92
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.
D.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 D-3 lists the supported access flags:
Table D-3: Access flags
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)
Access flags may be modified with the addition of the modifier flags listed in Table D-4.
Table D-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