MVR-300™ Refrigerant Gas Detector
12
P/N: 6203-9000 Version 1
3.3
Configuration
Configuration is accomplished via switches or from a Remote Terminal Unit (RTU) on a Modbus serial
communications network. Review the default settings to determine if they are suitable for your particular
application. If default values are not suitable, change the configuration using the DIP switches, or via the
Modbus interface. A summary of switches is shown below. For details on Modbus communications
registers, refer to Section 8.9: Modbus Registers on page 36.
NOTICE
By default, switch configurations supersede Modbus configurations. Use Modbus
register 2007 (Modbus Precedence over DIP Switch Settings) to change this
precedence.
Changes of configurations will not take effect until the detector is restarted (i.e., toggling switch 1 or
cycling power).
NOTICE
For a proper reset, switch 1 must be toggled (ON then OFF). If it is left ON, the detector
is held in reset mode and will not function correctly until the switch is returned to the
OFF position.
Figure 7. Switches for Configuring the MVR-300
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