找了幾天，終于發現論壇里3年前就有人問過了，但是沒有結果，并且由于帖子太老無法直接回復，特發此帖
我也遇到了相同的情況，設551＝3，USB連接變頻器后，用英文版SW3（含SW1的那個版本）讀會報錯，記錄文件如下：
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St. No. 0
Model: FR-A740-7.5K-CHT
Capacity: 7.5
Option 1: -------
Option 2: -------
Option 3: -------
Comment:
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Reading Error
+-----+--------------------------------------------------+----------+----------+
|NO. |Name |Initial |Error No. |
+-----+--------------------------------------------------+----------+----------+
| 260 |PWM frequency automatic switchover | 1 | 80010016 |
| 414 |PLC function operation selection | 0 | 80010016 |
| 415 |Inverter operation lock mode setting | 0 | 80010016 |
| 416 |Pre-scale function selection | 0 | 80010016 |
| 417 |Pre-scale setting value | 1 | 80010016 |
| 498 |PLC function flash memory clear | 0 | 80010016 |
| 506 |Parameter 1 for user | 0 | 80010016 |
| 507 |Parameter 2 for user | 0 | 80010016 |
| 508 |Parameter 3 for user | 0 | 80010016 |
| 509 |Parameter 4 for user | 0 | 80010016 |
| 510 |Parameter 5 for user | 0 | 80010016 |
| 511 |Parameter 6 for user | 0 | 80010016 |
| 512 |Parameter 7 for user | 0 | 80010016 |
| 513 |Parameter 8 for user | 0 | 80010016 |
| 514 |Parameter 9 for user | 0 | 80010016 |
| 515 |Parameter 10 for user | 0 | 80010016 |
+-----+--------------------------------------------------+----------+----------+
Total = 16
--------------------------------------------------------------------------------
FR Configurator SW3 Ver. 3.00
Date:06-09-2015 13:58:37
Communication:USB/1/19200/8/2/EVEN/CR/NONE
OS:Windows XP Professional Service Pack 3
CPU:Intel(R) Pentium(R) Dual CPU T2390 @ 1.86GHz
Clock:1.86GHz
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