西门子 SIMATIC S5 CP 521S1通讯处理机手册.pdf

西门子SIMATICS5CP521S1通讯处理机手册pdf,TheCP521SIcommunicationsprocessorreplacestheCP521input/outputmodule.TheCP521SIis equippedwithadditionaldatatransmissionprocedureswhichconsiderablyexpandtheareaof applicationoftheSIMATICprogrammablecontrollersofthelowerperformancerange.