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Macurco MRS-485 Modbus RS-485 Adapter
•
Switch 8, switch 7 and switch 6 are used to modify baud rate
•
Switch 5 and switch 4 are used to modify parity
•
Switch 3 and switch 2 are used to modify registration mode
•
Switch 1 is used to request to save the new settings
Switch 8
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Switch 5
OFF
OFF
ON
ON
Registration mode can be latched or unlatched. MRS-485 is always using data from a valid registration but when
registration is latched it will also compare the saved value with the new one and set a flag if it is different. This
way, by reading the flag, you can check if it is a different sensor type and you always get data about the sensor
present.
Switch 3
Switch 2
OFF
OFF
OFF
ON
REV – 1.0
Switch 7
Switch 6
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
Table 4-2 Baud rate configuration
Switch 4
OFF
ON
OFF
ON
Table 4-3 Parity Configuration
Description
Default registration mode (Registration not latched)
Registration not latched (Default value)
[34-2900-0019-8]
Description
Default baud rate (19200 Bd)
4800 Bd
9600 Bd
19200 Bd (Default value)
38400 Bd
57600 Bd
115200 Bd
Do not change
Description
Default parity EVEN (Default value)
Parity is ODD
Parity is NONE
Do not change
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P a g e
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