西门/子S7-200CN CPU 6ES7214-2AS23-0XB8/1AG40/1BG40/1BD23/1AD ¥1050.00 1P 6NH9720-3AA00/3AA01-0XX0西门子MD720-3 GSM无线电调制解调器 ¥1700.00 1P 6GK5774-1FX00-0AA0西门子W774-1 交换机6GK5774-1FX00-OAAO ¥4500.00 西门子SITOP开关电源PSU8200 6EP1336-3BA10/3BA00/2BA10/1LB00 ¥980.00 1P 6ES7972-4AA02-0XA0西门子信号导轨放大器6ES7 972-4AA02-OXAO ¥6500.00 6ES7215-1AG40-0XB0西门子PLC模块CPU 1215C 6ES7215-1AG40-OXBO ¥1650.00