<4. Setting converter>
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IM 12A01F01-03EN 2nd Edition : Feb. 19, 2019-00
4.6
Advanced settings
Advanced settings configure overall network, including MODBUS between the converter and
Host devices, MODBUS between the converter and SENCOM SAs, HART, Ethernet.
4.6.1
MODBUS setting
Configure MODBUS setting between HOST and the converter, the converter and SENCOM SA.
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Converter - SENCOM SA
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Sensor Address setting (S)
To establish communication between the converter and SENCOM SA, register MODBUS
address 1 to 247 of SENCOM SA on the converter. 248 is for unused connection.
Use Search MODBUS if SENCOM SA sensor address is not found. See Chapter 5.
NOTE
For multiple sensor connection, every SENCOM SA must have unique MODBUS address (1 to
247) to each other. If a MODBUS address is overlapped between multiple SENCOM SAs, the
connection goes fail.
NOTE
When you use other than SENCOM SA (e.g. analog sensor module, Optical DO Sensor),
register “1” to sensor connection number. By default, “1” is assigned on Address CH1-1 (sensor
connection number 1-1). If you assign address 1 to 247 to SENCOM SAs but SENCOM SA is not
connected or the communication is not established correctly, the network goes fail and the alarm
occurs.
Sensor Address setting (S) allows you to assign up to 8 types of sensor addresses on Address
CH (sensor connection number) 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, 2-3, 2-4 .
(The number before hyphen represents 1st or 2nd sensor module
i.e.1-:1st sensor module, 2-: 2nd sensor module)
For instance, when a SENCOM SA is connected to 1st sensor module, the SENCOM SA
address should be assigned to Address CH (sensor connection number) 1-1, 1-2, 1-3 1-4.
NOTE
FLXA402 allows only one sensor to connect to the 2nd sensor module. If you assign SENCOM
SA address to one of 2-1, 2-2, 2-3, 2-4, assign 248 to the other (not assigned) three Address CH.
For HART, always use Address CH (sensor connection number) 2-1.
