边缘网关如何对接西门子PLC

        PLC是种专门在工业环境下的可编程逻辑控制器，可取代传统的继电器电路，达到对设备的逻辑控制与顺序控制。边缘网关可通过PLC协议对PLC进行读写通信。例如纵横智控的EG8200边缘网关，可支持西门子、三菱、欧姆龙、倍福、汇川、松下等等主流PLC，将复杂的硬件接口、不同的工业网络协议等抽象为一个个的节点，用户可以灵活使用这些节点，以拖动、连线的方式，来代替传统复杂低效的编码过程。下面，小编带大家看看，边缘网关EG8200系列是如何和西门子PLC对接的。

  首先，需要链接网关，可通过网线、WIFI、远程链接等方式链接网关。

  然后，登录编程界面，通过西门子节点进行对接。具体操作如下：

  边缘网关的Siemens节点用于和西门子品牌的PLC进行读写通信。Siemens节点支持协议：S7、PPI。S7协议已经适配西门子所有在售的PLC型号，PPI只支持部分老旧PLC，强烈建议使用S7通信。

/*******************************协议*******************************/
协议：强烈建议和西门子PLC通信使用S7协议
/*****************************网络信息*****************************/
地址：PLC的IP
端口：S7通信默认102
连接超时：和PLC建立连接的超时时间
通讯超时：和PLC通信超时时间
保活时间：TCP连接保活时间
/*****************************PLC信息*****************************/
型号：S1500/S1200/S400/S300/S200/S200Smart
ConType：连接方式,通常为1
Rack：机架号
Slot：槽号
LocalTSAP：本地TASP
DestTSAP：远端TSAP

参数配置请参考:
	S1500/S1200/S400/S300
			根据PLC实际的情况来填写Rack和Slot
	S200Smart
			无需设置
	S200
			LoaclTSAP:4D57和DestTSAP:4D57
/*****************************地址信息*****************************/
参数列表:
地址类型	  描述	              备注
I0	      输入寄存器	          ex:I1.6
Q0	      输出寄存器	          ex:Q1.6
M0	      内部寄存器	          ex:M1.6,MW100,MD100
DB1.0	    数据寄存器	          ex:DB1.0.1,DB1.DBD100
V0	      数据寄存器	          等同于DB1.0
T0	      定时器寄存器	        ex:T37
C0	      计数器寄存器	        ex:C1
AI0	      模拟量输入映像寄存器	ex:仅支持字
AQ0	      模拟量输出映像寄存器	ex:仅支持字
/*****************************工作模式*****************************/
工作模式:读/写
触发条件:定时循环读/外部触发读

msg.payload
#对象数组,每个对象表示一个要执行的操作,数组表示可批量执行
#以下为每个对象的属性：
func
#要执行的读写操作,请参考下表
body.address
#要操作的地址/起始地址
body.length
#要操作的地址长度（以字节为单位）
body.name
#节点执行完毕以后,以此对象为key输出,否则以address为key输出
body.value
#要写入的值

msg.payload
#一个对象,包含了读写指令的结果
#读结果示例:msg.payload={VB10:0x10,VB11:0x11}
#写结果示例:msg.payload={VB10:true,VB11:true}

读S7-200 Smart数据

[{"id":"ece74f6f8a9a8548","type":"inject","z":"265cd2b9785ecf45","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":90,"y":200,"wires":[["52c1bedf10d86f5d"]]},{"id":"dc1df440e1b50c61","type":"debug","z":"265cd2b9785ecf45","name":"调试 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":690,"y":200,"wires":[]},{"id":"52c1bedf10d86f5d","type":"function","z":"265cd2b9785ecf45","name":"函数计算 1","func":"\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":250,"y":200,"wires":[["68d173cfb11675f9"]]},{"id":"68d173cfb11675f9","type":"Siemens","z":"265cd2b9785ecf45","name":"","protocol":"iplink_SiemensS7","IPAddress":"192.168.0.34","DestPort":"102","IPLinkTimeout":"2000","IPCommTimeout":"2000","Spname":"COM10","Baudrate":"9600","Databits":"8","Stopbit":"1","Paritybit":"0","RTSEnable":false,"SpLinktimeout":"2000","SpIntertimeout":"-1","workMode":"read","readMode":"cyc","readCyc":"1000","vartable":[{"addr":"VB10","name":"VB10","type":"byte","len":1},{"addr":"VB11","name":"VB11","type":"byte","len":1},{"addr":"VW100","name":"VW100","type":"uint16","len":2},{"addr":"VW102","name":"VW102","type":"uint16","len":2},{"addr":"VW104","name":"VW104","type":"uint16","len":2}],"SiemensS7Model":"5","SiemensS7ConnectionType":"1","SiemensS7Rack":"0","SiemensS7Slot":"0","SiemensS7LocalTSAP":"0","SiemensS7DestTSAP":"0","SiemensPPIStation":"2","stringvar":[],"customName":"Siemens:S7-S200Smart","x":470,"y":200,"wires":[["dc1df440e1b50c61"]]}]

写S7-200 Smart数据

[{"id":"c807d91fc01562b2","type":"inject","z":"265cd2b9785ecf45","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":110,"y":140,"wires":[["ee18017c9cb2e625"]]},{"id":"5f642f7cb333e422","type":"debug","z":"265cd2b9785ecf45","name":"调试 2","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":710,"y":140,"wires":[]},{"id":"ee18017c9cb2e625","type":"function","z":"265cd2b9785ecf45","name":"写VB10 VB11","func":"msg.payload = []\n\nmsg.payload[0] = {}\nmsg.payload[0].func = \"WriteByteArray\"\nmsg.payload[0].body = {}\nmsg.payload[0].body.name = \"VB10\"\nmsg.payload[0].body.address = \"VB10\"\nmsg.payload[0].body.value = \"10\"\n\nmsg.payload[1] = {}\nmsg.payload[1].func = \"WriteByteArray\"\nmsg.payload[1].body = {}\nmsg.payload[1].body.name = \"VB11\"\nmsg.payload[1].body.address = \"VB11\"\nmsg.payload[1].body.value = \"11\"\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":280,"y":140,"wires":[["4dbd7a125ac67c98"]]},{"id":"4dbd7a125ac67c98","type":"Siemens","z":"265cd2b9785ecf45","name":"","protocol":"iplink_SiemensS7","IPAddress":"192.168.0.34","DestPort":"102","IPLinkTimeout":"2000","IPCommTimeout":"2000","Spname":"COM10","Baudrate":"9600","Databits":"8","Stopbit":"1","Paritybit":"0","RTSEnable":false,"SpLinktimeout":"2000","SpIntertimeout":"-1","workMode":"read","readMode":"trigger","readCyc":"1000","vartable":[{"addr":"VB10","name":"VB10","type":"byte","len":1},{"addr":"VB11","name":"VB11","type":"byte","len":1},{"addr":"VW100","name":"VW100","type":"uint16","len":2},{"addr":"VW102","name":"VW102","type":"uint16","len":2},{"addr":"VW104","name":"VW104","type":"uint16","len":2}],"SiemensS7Model":"5","SiemensS7ConnectionType":"1","SiemensS7Rack":"0","SiemensS7Slot":"0","SiemensS7LocalTSAP":"0","SiemensS7DestTSAP":"0","SiemensPPIStation":"2","stringvar":[],"customName":"Siemens:S7-S200Smart","x":510,"y":140,"wires":[["5f642f7cb333e422"]]},{"id":"a4dcae532f31b571","type":"inject","z":"265cd2b9785ecf45","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":110,"y":200,"wires":[["b969c69b9408fcff"]]},{"id":"238e2f37c070699e","type":"debug","z":"265cd2b9785ecf45","name":"调试 3","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":710,"y":200,"wires":[]},{"id":"b969c69b9408fcff","type":"function","z":"265cd2b9785ecf45","name":"读VB10 VB11","func":"msg.payload = []\nmsg.payload[0] = {}\nmsg.payload[0].func = \"ReadByteArray\"\nmsg.payload[0].body = {}\nmsg.payload[0].body.name = \"VB10\"\nmsg.payload[0].body.address = \"VB10\"\nmsg.payload[0].body.length = 1\n\nmsg.payload[1] = {}\nmsg.payload[1].func = \"ReadByteArray\"\nmsg.payload[1].body = {}\nmsg.payload[1].body.name = \"VB11\"\nmsg.payload[1].body.address = \"VB11\"\nmsg.payload[1].body.length = 1\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":280,"y":200,"wires":[["b54ae54d08cbc456"]]},{"id":"b54ae54d08cbc456","type":"Siemens","z":"265cd2b9785ecf45","name":"","protocol":"iplink_SiemensS7","IPAddress":"192.168.0.34","DestPort":"102","IPLinkTimeout":"2000","IPCommTimeout":"2000","Spname":"COM10","Baudrate":"9600","Databits":"8","Stopbit":"1","Paritybit":"0","RTSEnable":false,"SpLinktimeout":"2000","SpIntertimeout":"-1","workMode":"write","readMode":"cyc","readCyc":"1000","vartable":[{"addr":"VB10","name":"VB10","type":"byte","len":1},{"addr":"VB11","name":"VB11","type":"byte","len":1},{"addr":"VW100","name":"VW100","type":"uint16","len":2},{"addr":"VW102","name":"VW102","type":"uint16","len":2},{"addr":"VW104","name":"VW104","type":"uint16","len":2}],"SiemensS7Model":"5","SiemensS7ConnectionType":"1","SiemensS7Rack":"0","SiemensS7Slot":"0","SiemensS7LocalTSAP":"0","SiemensS7DestTSAP":"0","SiemensPPIStation":"2","stringvar":[],"customName":"Siemens:S7-S200Smart","x":510,"y":200,"wires":[["238e2f37c070699e"]]}]

※ 注意：

●机架号/槽号博图软件查看方式