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更新时间:2019-05-28 12:32:08浏览次数:251

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NCU6FC5357-0BB14-0AA0编程
业务销售;竭诚为你服务.
公司主营西门子PLC模块,数控伺服,触摸屏等系列产品,产品*,质保一年

详细介绍

NCU6FC5357-0BB14-0AA0编程 主营西门子自动化产品,*,现货现售,价格优势,保证,价格优势本公司销售西门子PLC,西门子屏,西门子数控,西门子软启动,西门子以太网。西门子电机,西门子变频器,西门子直流调速器,西门子电缆。*,现货销售,价格优势,*.公司主营:西门子数控,V20变频器S7-200CN.S7-200smart.S7-300.S7-400.S7-1200.6ES5 ET200 人机界面,变频器,DP总线,MM420 变频器MM430 变频器MM440 6SE70交流工程调速变频器6RA70直流调速装置 SITOP电源,电线电缆,数控备件,伺服电机等工控产品.
1、PLC类产品均为密封包装,外包装详见产品图片,白色标签上均有西门子品牌LOGO及产品订货号,各位买家在收到货后,请核对型号无误,再拆包装(包装拆开后将无法二次销售,不支持退换货)。
 2、产品及包装上均有系列号,凭此序列号,质保一年。
签物时,一定要当着快递业务员的面开箱检验货物的完,如有破损,请拒绝签收,并及时电话与我们联系,我们将及时处理.

位串 (BYTE、WORD、DWORD) 和数据类型 CHAR 一开始就扩展成所需的宽度,然
                 后再这些位。源类型决定了解释。

参见

                CHAR (页 286)

                CHAR 隐式转换 (页 592)

                数据类型转换概述 (页 561)


                                                                                对 PLC 进行编程
646                                                                       编程和操作手册, 10/2018                                                                                    数据类型
                                                       3.16 S7-1200 的数据类型转换: (S7-1200)

WCHAR 显式转换 (S7-1200)

显式转换选项

                下表列出了 WCHAR 数据类型的显式转换选项和指令:

                源       目标       转换         说明                        指令助记符

                WCHA    BOOL     -          不能进行显式转换                  -
                R       BYTE1)   X          源值的位以右对齐              WCHAR_TO_BYTE
                        WORD1)   X          原样传递到目标数据类型。              WCHAR_TO_WORD
                        DWORD    X                                    WCHAR_TO_DWORD
                        1)

                        SINT     X                                    WCHAR_TO_SINT
                        USINT    X                                    WCHAR_TO_USINT
                        INT      X                                    WCHAR_TO_INT
                        UINT     X                                    WCHAR_TO_UINT
                        DINT     X                                    WCHAR_TO_DINT
                        UDINT    X                                    WCHAR_TO_UDINT
                        REAL     -          不能进行显式转换                  -
                        LREAL    -                                    -
                        TIME     -                                    -
                        DTL      -                                    -
                        TOD      -                                    -
                        DATE     -                                    -
                        STRING   -                                    -
                        WSTRIN   X          值将转换为字符串                  WCHAR_TO_WSTRING
                        G                   (WSTRING) 的个字符。
                                            如果未定义字符串的长度,
                                            则在转换后将长度设置为
                                            “1"。 如果已定义字符串的
                                            长度,则它在转换后保持不
                                            变。

                        CHAR     X                                    WCHAR_TO_CHAR


对 PLC 进行编程
编程和操作手册, 10/2018                                                                         647数据类型
3.16 S7-1200 的数据类型转换: (S7-1200)

                 源      目标        转换         说明                       指令助记符

                 x:可以转换
                 - : 不可转换
                 1) 位串 (BYTE、WORD、DWORD) 和数据类型 CHAR 一开始就扩展成所需的宽度,然
                 后再这些位。源类型决定了解释。



                                                                                对 PLC 进行编程
648                                                                       编程和操作手册, 10/2018                                                                                    数据类型
                                                       3.16 S7-1200 的数据类型转换: (S7-1200)

STRING 显式转换 (S7-1200)

显式转换选项

                下表列出了 STRING 数据类型的显式转换选项和指令:


对 PLC 进行编程
编程和操作手册, 10/2018                                                                         649数据类型
3.16 S7-1200 的数据类型转换: (S7-1200)


                 源      目标        转换         说明                          指令助记符

                 STRIN  BOOL      -          不能进行显式转换                    -
                 G      BYTE      -                                      -
                        WORD      -                                      -
                        DWORD     -                                      -
                        SINT      X          从字符串 (STRING) 的个字         STRING_TO_SINT,
                                             符开始转换,直到字符串的结尾              S_CONV,
                                             或者到个不允许的字符处结              STRG_VAL
                        USINT     X          束。 可以转换以下字符:                STRING_TO_USINT,
                                             ● 数字                         S_CONV,
                                             ● 符号                        STRG_VAL
                        INT       X          ● 句点                        STRING_TO_INT,
                                             字符串的个字符可以是符号              S_CONV,
                                             (+, -) 或数字。将忽略前导空           STRG_VAL
                                             格。  句点用于分隔浮点数的转
                        UINT      X                                      STRING_TO_UINT,
                                             换。  不允许使用指数符号          "
                                                                   “e    S_CONV,
                                             或  "。   允许在小数点左边使用
                                               “E                        STRG_VAL
                                             逗号作为千位分隔符,但将忽略
                        DINT      X                                      STRING_TO_DINT,
                                             该分隔符。 如果转换的字符串格
                                                                         S_CONV,
                                             式无效或者发生溢出,将使能输
                                                                         STRG_VAL
                                             出 ENO 设置为“0"。
                        UDINT     X                                      STRING_TO_UDINT
                                                                         , S_CONV,
                                                                         STRG_VAL
                        REAL      X                                      STRING_TO_REAL,
                                                                         S_CONV,
                                                                         STRG_VAL
                        LREAL     X                                      STRING_TO_LREAL
                                                                         , S_CONV,
                                                                         STRG_VAL
                        TIME      -          不能进行显式转换                    -
                        DTL       -                                      -
                        TOD       -                                      -
                        DATE      -                                      -


                                                                                对 PLC 进行编程
650                                                                       编程和操作手册, 10/2018                                                                                    数据类型
                                                       3.16 S7-1200 的数据类型转换: (S7-1200)

                源       目标       转换         说明                           指令助记符

                        CHAR     X          将字符串 (STRING) 的个字          STRING_TO_CHAR,
                                            符转换为目标数据类型。 如果字               S_CONV
                                            符串为空,则会将值“0"写入目
                                            标数据类型。

                        WCHAR    -          不能进行显式转换                     -
                        WSTRIN   X                                       STRING_TO_WSTRI
                        G                                                NG
                x:可以转换
                - : 不可转换

参见

                STRING (页 287)

                数据类型转换概述 (页 561)


对 PLC 进行编程
编程和操作手册, 10/2018                                                                         651数据类型
3.16 S7-1200 的数据类型转换: (S7-1200)

WSTRING 显式转换 (S7-1200)

显式转换选项

                下表列出了 WSTRING 数据类型的显式转换选项和指令:


                                                                                对 PLC 进行编程
652                                                                       编程和操作手册, 10/2018                                                                                    数据类型
                                                       3.16 S7-1200 的数据类型转换: (S7-1200)


                源       目标       转换         说明                           指令助记符

                WSTR    BOOL     -          不能进行显式转换                     -
                ING     BYTE     -                                       -
                        WORD     -                                       -
                        DWORD    -                                       -
                        SINT     X          从字符串 (STRING) 的个字          WSTRING_TO_SINT
                                            符开始转换,直到字符串的结尾               , S_CONV,
                                            或者到个不允许的字符处结               STRG_VAL
                        USINT    X          束。可以转换以下字符:                  WSTRING_TO_USI
                                            ●  数字                        NT, S_CONV,
                                            ●  符号                        STRG_VAL
                        INT      X          ●  句点                        WSTRING_TO_INT,
                                            字符串的个字符可以是符号               S_CONV,
                                            (+, -) 或数字。将忽略前导空格。          STRG_VAL
                                            句点用于分隔浮点数的转换。不
                        UINT     X                                       WSTRING_TO_UINT
                                            允许使用指数符号         "或    "。
                                                            “e   “E      , S_CONV,
                                            允许在小数点左边使用逗号作为
                                                                         STRG_VAL
                                            千位分隔符,但将忽略该分隔
                        DINT     X                                       WSTRING_TO_DINT
                                            符。 如果字符串的布局对于转换
                                                                         , S_CONV,
                                            而言无效,或者发生上溢,那么
                                                                         STRG_VAL
                                            使能输出 ENO 将设置为“0"。
                        UDINT    X                                       WSTRING_TO_UDI
                                                                         NT, S_CONV,
                                                                         STRG_VAL
                        REAL     X                                       WSTRING_TO_REA
                                                                         L, S_CONV,
                                                                         STRG_VAL
                        LREAL    X                                       WSTRING_TO_LRE
                                                                         AL, S_CONV,
                                                                         STRG_VAL
                        TIME     -          不能进行显式转换                     -
                        DTL      -                                       -
                        TOD      -                                       -
                        DATE     -                                       -
                        CHAR     -                                       -


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