Honeywell SMV800 - 6. Security; 6.1 Security Guidelines

Revision 1.0 SMV800 Modbus User's Guide Page 195
Warning
Sensor
Unreliable
Communication
This is roll up status
bit set for the
following:
• Temperature
Module Unreliable
Communication
• Pressure Module
Unreliable
Communication
Refer status bits
corresponding to
unreliable
communication status
of pressure in register
121 and temperature
module in register
120 for more details.
Internal
communication
quality between
Communication board
and Temp Module or
Communication board
and Meter Body is
degrading.
Bit - 4
118
Tamper Alarm
Device is in Write
Protect Mode and the
user tried to change
one or more of the
parameters. The
write attempts
exceeded the
Tamper attempt limit.
More than a specified
num of attempts or
actual config changes
are made, with
Tamper Alarm
enabled. Warning
stays active until the
specified Tamper
latency period has
elapsed. If needed,
set the Tamper
attempt to maximum
value (10) or disable
the Tamper alarm
during setup stages
of the device to avoid
alarm being setup
frequently. If
configuration changes
are required,
contact a qualified
individual to unlock
the Write Protection
Mode feature and
make the required
updates.
Bit - 5
Low Supply
Voltage
The supply voltage to
the transmitter
power terminals is
too low. Any or all of
these status is set :
Low supply voltage
to: the transmitter or,
Temp sensor module
or Press. Sensor;
or supply voltage to
the transmitter has
dropped low enough
to cause a Device
Warm Reset
Check that the power
supply at terminals to
be within
specification. Try to
increase the supply
voltage level. If
supply voltage is
adequate and if the
problem still persists
replace the
communication
module followed by
Temperature module
followed by Meter
Body.
Bit - 6