现有315-2PN/DP一台，需要经过交换机与5台支持标准TCP通讯的设备进行以太网通讯，如何操作；如果与1台TCP设备可以通过调用TCON等指令，但是与多台同时进行通讯，该如何操作，望大神指教
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通信[S7-1500]
http://www.ad.siemens.com.cn/productportal/prods/1500published/1500list/com_list0.html
通信SIMATIC S7-200
http://www.ad.siemens.com.cn/productportal/prods/s7-200-portal/micropower2013/smart%20sms/043.html
通信_S7-200 SMART
http://www.ad.siemens.com.cn/productportal/prods/s7-200-smart-portal/200smarttop/smartsms/038.html
http://www.ad.siemens.com.cn/productportal/prods/s7-200-smart-portal/200smarttop/smartsms/076.html
通信__SIMATIC S7-1200
http://www.ad.siemens.com.cn/productportal/prods/s7-1200_plc_easy_plus/smartsms/019.html
SIMATIC S7-300通信
http://www.ad.siemens.com.cn/productportal/prods/published/300list/comm_list0.html
LOGO! S7 通信
http://www.ad.siemens.com.cn/productportal/prods/logo/logosms/18_s7_communication.html
精智（Comfort）屏通信问题合集
http://www.ad.siemens.com.cn/productportal/prods/hmi/comfortpanel/list_collection/list_communication.html
二代精简通信问题合集
http://www.ad.siemens.com.cn/productportal/prods/hmi/2ndbasicpanel/list_collection/list_communication.html
S7-300与S7-200Smart通信
http://www.ad.siemens.com.cn/productportal/prods/published/300list/comm_list17.html
WinCC通信问题合集
http://www.ad.siemens.com.cn/productportal/prods/hmi/wincc/q2_communication/list_q1.html
PC Access SMART OPC通信
http://www.ad.siemens.com.cn/productportal/prods/s7-200-smart-portal/200smarttop/smartsms/017.html
PC Access 使用说明
http://www.ad.siemens.com.cn/productportal/prods/s7-200-portal/micropower2013/smart%20sms/062.html
Smart屏通讯问题合集
http://www.ad.siemens.com.cn/productportal/prods/hmi/smartlinesv3faq/list_q1.html
SMART LINE 与PLC连接
http://www.ad.siemens.com.cn/productportal/prods/s7-200-smart-portal/200smarttop/smartsms/022.html
S7-200 SMART PROFINET通信
http://www.ad.siemens.com.cn/productportal/prods/s7-200-smart-portal/200smarttop/smartsms/076.html
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