西門子核心代理商，以下產(chǎn)品現(xiàn)貨銷售，且價格非常有優(yōu)勢
1、*處理單元CPU
CPU 221 DC/DC/DC 6入4出                     6ES7211-0AA23-0XB0
CPU 221 AC/DC/繼電器 6入4出                 6ES7211-0BA23-0XB0
CPU 222 DC/DC/DC8入6出                     6ES7212-1AB23-0XB0/8
CPU 222 DC/DC/DC繼電器8入6出              6ES7212-1AB23-0XB0/8
CPU 224 DC/DC/DC16入10出                   6ES7214-1AD23-0XB0/8
CPU 224 DC/DC/DC繼電器16入10出             6ES7214-1BD23-0XB0/8
CPU 224 XP DC/DC/DC16入10出                 6ES7214-2AD23-0XB0/8
CPU 224 XP  DC/DC/DC繼電器16入10出        6ES7214-2BD23-0XB0/8
CPU 226 DC/DC/DC24入16出                    6ES7216-2AD23-0XB0/8
CPU 226  DC/DC/DC繼電器24入16出            6ES7216-2BD23-0XB0/8

2、擴展模塊EM
EM221 DI模塊 8入 24VDC                                        6ES72211BF220XA0
EM221 DI模塊 8入 （交流120/230VAC）                6ES72211EF220XA0
EM221 DI模塊16入 24VDC                                         6ES72211BH220XA0
EM222 DO模塊 8出 24VDC                                       6ES72221BF220XA0
EM222 DO模塊 8出 繼電器                                        6ES72221HF220XA0
EM222 DO模塊 8出 （交流120/230VAC）             6ES72221EF220XA0
EM222 DO模塊 4出 24VDC-5A                                 6ES72221BD220XA0
EM222 DO模塊 4出繼電器-10A                                  6ES72221HD220XA0
EM223DI/ DO模塊4入/4出 24VDC                             6ES72231BF220XA0
EM223DI/ DO模塊4入24VDC/4出繼電器輸出           6ES72231HF220XA0
EM223DI/ DO模塊8入/8出 24VDC                             6ES72231BH220XA0
EM223DI/ DO模塊8入24VDC/8出繼電器輸出           6ES72231PH220XA0
EM223DI/ DO模塊16入/16出 24VDC                        6ES72231BL220XA0
EM223DI/ DO模塊16入24VDC/16出繼電器輸出      6ES72231PL220XA0
EM231模擬量輸入模塊 4輸入                                     6ES72310HC220XA0
EM231 2路輸入熱電阻                                                  6ES72317PB220XA0
EM231 4路輸入熱電偶                                                  6ES72317PD220XA0
EM232 模擬量輸出模塊，2輸出                                  6ES72320HB220XA0
EM235 模擬量輸入/輸出模塊 4入/1出                        6ES72350KD220XA0
EM241調(diào)制解調(diào)器模塊                                                  6ES72411AA220XA0
EM253 定位模塊                                                             6ES72531AA220XA0
EM277 PROFIBUS-DP模塊                                          6ES72770AA220XA0
CP241-1以太網(wǎng)模塊                                                       6GK72431EX000XE0
CP243-1 IT版以太網(wǎng)模塊                                               6GK72431GX000XE0
CP243-2 AS-I 接口模塊                                                  6GK72432AX010XA0
3、卡和電纜
MC291，34k*8 EEPROM 存儲器盒                   6ES72918GE200XA0
存儲卡，64K                                     6ES72918GF230XA0
存儲卡，256K                                     6ES72918GH230XA0
CC292，CPU22x時鐘/日期電池盒                  6ES72971AA200XA0
新CPU221/222時鐘卡（包括電池卡功能），新時鐘卡只能在新一代CPU中工作，新時鐘卡不能在老CPU中工作，原時鐘卡不能在新一代CPU中工作           6ES72971AA230XA0
BC293，CPU22x電池盒                            6ES72918BA200XA0
擴展電纜，I/O擴展，0.8米，CPU22x/EM              6ES72906AA200XA0
編程通訊電纜，PC/PPI，RS232/485轉(zhuǎn)換，帶光電隔離，zui大187.5K波特率，支持多主站  6ES79013CB300XA0
編程通訊電纜，PC/PPI，USB/485轉(zhuǎn)換，帶光電隔離，zui大187.5K波特率，支持多主站  6ES79013DB300XA0
STEP7-MICRO/WIN 4.0   STEP7-MICRO/WIN 4.0+SP4