Panasonic S-Link FP2, Техническое руководство

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5-5
Note:
•
Do not used pointed objects such as needles, or breakable objects such as mechanical pencil lead, to
press the system SET button.
•
If address recognition is performed first, the information is stored in EEPROM. There is thus no need to
press the system SET button each time the power is turned on.
•
Turning on the flag in the shared memory enables to perform the equivalent operation of the system
SET button.
System SET button
•
When the power supply is switched on for the fist time after completing the wiring of S-LINK system, an
arbitrary error display may appear. This does not indicate any abnormal operation. (If the system SET
button is pressed, this display is erased.)
•
If an error address is displayed during normal use of the device, do not press the system SET button.
Pressing the system SET button causes the check of that address to be skipped during subsequent
checking operations.
What to do if an error occurs
Check the address that is displayed, and then turn off the power supply. Take whatever steps are
necessary to correct the error for that address (correct settings and connections) and then turn on the
power supply again.
5.4.2 Results and Processing of Address Recognition
If there are no problems
The displayed numeric value matches the actual number of S-LINK I/O devices that are connected to the
S-LINK system. Operation of the FP
Σ
can now be begun.
Explanation
The connection status that is recognized is stored in the EEPROM in the S-LINK unit. After this, it will not
be necessary to press the system SET button when the power supply is turned on.
Checking for errors in the S-LINK during operation will be carried out based on the connection status
stored in the memory at this time.
If there is a problems
The displayed numeric value does not match the actual number of S-LINK I/O devices that are
connected to the S-LINK system.
Explanation
There is a S-LINK I/O device that has not been correctly recognized.
Turn off the power supply and check carefully for erroneous connections, and to make sure none of the
addresses specified for S-LINK I/O devices have been duplicated.
For information on connections and on specifying addresses, refer to the “S-LINK Design Manual”.
After the error is corrected
Carry out the steps described in “Recognizing the Address”.