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FX
-128ASL-M User's Manual
3U
6.2.3
Automatic address detection function
Automatic address detection is a function to store the IDs (addresses) of the connected slave modules in the
EEPROM of the 128ASL-M.
Parameters of connected devices are automatically updated after IDs are stored to EEPROM and after
detection of unset IDs (addresses) and duplicate IDs (addresses).
The ID (address) information stored in the EEPROM is held even when the power is turned OFF. However,
information about unset IDs (address) and duplicate IDs (address) and the ASLINK parameter information of
each slave module are not held.
For the address setting for slave modules, refer to the manual for the slave module used.
Whenever starting the system or changing the system configuration as follows, set the correct address to all
the slave modules, and perform the automatic address detection.
- When starting the system operation
- When adding a slave module after starting the system operation
- When removing a slave module after starting the system operation
- When changing the address of a slave module after starting the system operation
The automatic address detection can be performed using two means, the SET switch and automatic address
detection command output.
• Using the SET switch
Step
1) Check that all of the slave modules are operating normally.
2) Remove the top cover, and keep pressing the SET switch until the SET LED (green) turns ON.
3) When the SET LED stays on for a while, and then flickers and turns OFF, the ID (address) has been
stored.
4) When automatic address detection flag (BFM#28 b11) turns OFF, automatic address detection is
completed.
• Using Automatic address detection command
Step
1) Check that all of the slave modules are operating normally.
2) Turn on automatic address detection command (BFM#27 b1)
3) When the SET LED stays ON for a while, and then flickers and turns OFF, the ID (address) has been
stored.
4) When automatic address detection flag (BFM#28 b11) turns OFF, automatic address detection is
completed.
44
6 Introduction of Functions
6.2 Details of functions
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