MVR-300™ Refrigerant Gas Detector
38
P/N: 6203-9000 Version 1
8.9.3
Analog Output Registers
Analog output registers are readable (using function code 03) and writable (using function code 06).
NOTICE
Before writing to any “locked” registers, be sure to use the Parameter Unlock register
(2000) first to unlock the registers and (if desired) to re-lock those registers afterwards.
Reg
Addr
Name
Description
Data
Type
Def Val
R/W
2000
Parameter Unlock
Writing the correct unlock code
(0x6388) to this register allows
an external controller to change
system parameters. Writing any
other value (or cycling power
thereby restoring the default
value of zero) re-locks the
lockable system parameters.
Unsigned
integer
0
R/W
2001
RS-485 Node
Address
Modbus address 1-247
Unsigned
integer
1
R/W
2002
Baud Rate
0 = 9600 Baud; 1 = 19200 Baud
Unsigned
integer
0 (9600
baud)
R/W
2003
Stop Bits
Number of stop bits
Unsigned
integer
1
R/W
2004
Parity
Parity (0=none, 1=odd, 2=even)
Unsigned
integer
None
R/W
2005
Gas Low Alarm
PPM
Low gas alarm in PPM
Unsigned
integer
Unit
dependent
R. W if
un-
locked
2006
Gas High Alarm
PPM
High gas alarm in PPM
Unsigned
integer
Unit
dependent
R. W if
un-
locked
2007
Modbus
Precedence over
DIP Switch Settings
If set then the values
programmed over Modbus take
precedence over the values set
by DIP switch
0 = DIP settings used
1 = MODBUS settings used
Unsigned
integer
0
R. W if
un-
locked
2008
Alarm On Delay
Value
Alarm On delay in minutes.
Range 0-15.
Note: Setting only has an effect
if the Modbus priority flag is set
Unsigned
integer
0
R. W if
un-
locked
2009
Relay Contact
Behavior / Failsafe
0 = NO relay
1 = Failsafe relay
Note: Setting only has an effect
if the Modbus priority flag is set
Unsigned
integer
0
R. W if
un-
locked
www.
.com
1.800.561.8187
