6ES7350-1AH03-0AE0 FM350-1 计数器功能模块SIMATIC S7-300, COUNTER MODULEFM 350-1 FOR S7-300,COUNTER FUNCTIONS UP TO 500 KHZ1 CHANNEL FOR CONNECTION OF5V AND 24V INCREMENTAL ENCODERSISOCHRON MODE,MEASUREMENT MODEINCL. CONFIG. PACKAGE ON CD