<!--StartFragment -->
SCREEN-ACTIVE = '1'.
SCREEN-INPUT = '1'.
SCREEN-OUTPUT = '0'.
屏幕虽然可以输入，但值不能显示，修改为以下则可以：
SCREEN-ACTIVE = '1'.
SCREEN-INPUT = '1'.
SCREEN-OUTPUT = '1'.
官方帮助文件已经说明：
| ACTIVE |
INPUT |
OUTPUT |
INVISIBLE |
Effect
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590911 查看本文章
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| 1 |
1 |
1 |
0 |
Screen field is displayed, even if Invisible is set statically. Field contents are displayed. Ready for input, even if Input is not set statically. However, not ready for input if the Output only is set statically. |
| 1 |
1 |
0 |
0 |
Screen field is displayed, even if Invisible is set statically, except when Output only is set statically. Field contents are not displayed. Ready for input, even if Input is not set statically. |