长春地区西门子模块代理商

长春地区西门子模块代理商

应用

With the standard position switches, mechanical positions ofmoving machine parts are converted into electrical signals. Throughtheir modular and uniform design and large number of variants, thedevices can comply with practically all requirements inindustry.

Devices are available with enclosure versions to suit theparticular ambient conditions. Different control tasks can beperformed with the contact blocks best suited for the particularpurpose. And many different actuator variants are available tomatch the mechanical configuration of the moving machine parts.Dimensions, fixing points and characteristics are largely inaccordance with the EN 50041 or EN 50047 standards.

The devices are suitable for use in any climate.

The switches comply with IEC 60947‑1 (Low-VoltageControlgear, General) and IEC 60947‑5‑1 (ElectromechanicalControl Circuit Devices).

The mechanical design of the switch corresponds to therequirements of the fail-safe principle according toISO 14119.

AS-Interface according to IEC 62026‑2

The 3SF1 position switches are approved according toUL 508, UL 50 and UL 746-C.

Standard IEC 60947‑5‑1 requires positive opening of the NCcontacts. In other words, for the purposes of personal safety, theassured opening of NC contacts is expressly stipulated for theelectrical equipment of machines in all safety circuits and markedin accordance with the standard IEC 60947‑5‑1 with the symbol(→).

With a 3SF1 safety switch with (→), SIL 2 according toIEC 2061/IEC 61508 or PL c according toISO 13849‑1 can be attained if the corresponding fail-safeevaluation units are selected from the ASIsafe program andcorrectly installed.

If a second 3SF1 safety switch with (→) is used,SIL 3/PL e can be attained.

为 PROFINET 通信口分配以太网地址

在 “Device View”中点击 CPU 上代表PROFINET 通信口的绿色小方块，在下方会出现PROFINET 接口的属性，在“Ethernet addresses” 下分配IP 地址为 192.168.0.1 ，子网掩码为255.255.255.0，如图3.所示。


图3. 分配IP 地址

同样方法，在同一个项目里添加另一个新设备S7-1200 CPU 并为其分配 IP 地址为192.168.0.2

创建 CPU之间的逻辑网络连接

在项目树 “Project tree”>“Devices & Networks” >“Networks view”视图下，创建两个设备的连接。用鼠标点中 PLC_1 上的PROFINET通信口的绿色小方框，拖拽出一条线，到一个PLC_2上的PROFINET通信口上，松开鼠标，连接就建立起来了，如图4所示。

建立两个 CPU的逻辑连接 

在 PLC_1 中调用并配置“TCON”、“TSEND”、“TRCV” 通信指令

1．在 PLC_1 的 OB1 中调用“TCON” 通信指令

① 在个 CPU 中调用发送通信指令，进入 “Project tree” > “ PLC_1” > “Programblocks” > “OB1” 主程序中，从右侧窗口 “Instructions” > “Communications”> “OPEN User Communications”下调用 “TCON” 指令，创建连接，如图5所示。