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Function 06 Write Single Register & Function 03 Read Holding Registers
Address Register name Short description
Medium
description
Long description
Max
value
Min
value
Unit of
Measure
Modbus
Bit pos.
Modbus
Length
Default
Value
200 LimitAlarm Alarm limit Alarm threshold Alarm threshold 10000 0 ppm 0 16
201 Delay Delay Delay before alarm
activation
Delay before
alarm activation
20 0 min 0 16 0
203 LimitWarning Warning limit Warning threshold Warning
threshold
10000 0 ppm 0 16
204 AnalogOutputType Type of Analog
output
Type of Analog
output signal
2 = 4-20mA ;
5 = 1-5V ;
8 = 2-10V ;
10 = 0-10V
10 2 0 16 2
205 PassCode PassCode Password to
authorize the next
command
Password to
authorize the next
command
65535 0 0 16
206 GasType (
*
) Type of gas Gas type value Gas type value 50 0 0 16
655 SpanConcentration SpanConcentration Span concentration
for calibration
Span
concentration for
calibration
10000 0 ppm 0 16 0
Function 02 Read Input Status
Address Register name Short description Medium description
Long
description
Max
value
Min
value
Unit of
meas.
Modbus
Bit pos.
Modbus
length
Default
value
300 PreAlarmFlag Alarm flag Indicator of whether
the alarm threshold has
been exceeded
1 = alarm
threshold
exceeded
1 0 0 1 0
302 Fault Fault Fault indication 1 = Fault
activated
1 0 0 1 0
303 W1LED W1LED W1 RED status LED W1 RED status
LED
1 0 0 1 0
304 W2LED W2LED W2 GREEN status LED W2 GREEN
status LED
1 0 0 1 0
305 W3LED W3LED W3 YELLOW status
LED
W3 YELLOW
status LED
1 0 0 1 0
307 PreWarningFlag PreWarning flag Indicator of whether
the warning threshold
has been exceeded
1 = warning
threshold
exceeded
1 0 0 1 0
308 WarningFlag Warning relay Warning activation
indicator including
delay
1 = Warning ON 1 0 0 1 0
309 AlarmFlag Alarm relay Alarm activation indica
tor including delay
1 = Alarm on 1 0 0 1 0
310 BTStatus BTStatus Bluetooth® status 1 = Bluetooth®
on
1 0 0 1 0
311 SensorExpired Sensor expired Flag showing if the
sensor needs to be
replaced
1 = sensor to be
replaced
1 0 0 1 0
312 DeviceUnlocked Device unlocked Indicator for
authorization to modify
variables
1 = unlocked 1 0 0 1 0
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