User manual
77
POWER INSTRUMENTS
2. Global settings
The addresses of all global variables are 101dH~1024H and 103dH in
system parameters discussed in chapter 5. “Alarming enable” determines
whether the alarming function of this meter works. Only when it is set as “1”,
the alarming function enables. When “Alarming ash enable“ is set to “1”, the
backlight will ash when an alarm happens.
“Alarming records enable setting” determines whether it records. There are
16 records in all and each one corresponds to one bit of a 16-bit register. For
each record, it works or not depending on the enable setting. If some bits of the
register are “1”, it means their corresponding records take effect.
“Relay for alarming setting”: There are two relays. They can be used as
remote controlling output and alarming output. But one can’t work in two modes
at the same time. “1” means the relay works in alarming mode and “0” for
remote controlling mode. This setting is valid for both relays.
“Alarming output to RO1 setting”: when “Relay for alarming setting” is set
to be “1”, the relay is available for alarming, but which record it will be driven by
and whether output to RO1 or RO2 will depend on other settings. This setting
will give an answer. There are 16 records in all and each one corresponds to
one bit of a 16-bit register, when the corresponding bit is set to “1”, the relay
will close if the alarming condition is satised. It opens only when all the alarms
related to RO1 recover. If the corresponding bit is set to “0”, RO1 will not be
disturbed.
Note: When the relay is used in alarming mode, it works in latching mode. There
is no pulse mode. So all setting of the relay's working mode will be ignored.