SIEMENS
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西门子IK PI·2015年
Industrial Remote Communication
Remote Networks
Modems for the conventional telephone network
7
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概述
SINAUT MD3调制解调器
调制解调器用于信号和数据的有线传输
在各个站和远程控制中心之间
控制系统。西门子为两者提供适当的调制解调器
dedicated lines and dial-up networks.
与Tim模块一样，这些可以在S7-300中容纳
外壳：
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MD2;
用于多点连接的专用线路调制解调器，
can be tapped,
也可以用作中继器，
max. 19 200 bps
•
MD3;
modem for the analog telephone network,
max. 33 600 bps;
can also be used as a dedicated-line modem for a point-to-
点连接，
max. 33 600 bps in voice band
这些调制解调器可以连接到串行调制解调器界面
of a TIM module.
The modems are supplied together with the WAN connecting
cable required in each case. Connecting cables for connecting
the modems to a TIM must be ordered separately.
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好处
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Diverse application options for use in dedicated-line networks
or for conventional telephone networks (analog, ISDN, GSM)
•
Matched to the telecontrol system by means of the design of
the SIMATIC S7-300
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电源和WAN接口之间的电气隔离
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Application
调制解调器可用于其他应用程序专用 -
line modems or dial-up modems independently of the
SINAUT ST7 system.
由于设计和电气性质，调制解调器是
suited above all for applications in the industrial sector.
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Design
所有三种调制解调器类型都是相同设计和提供所有的
advantages of the SIMATIC S7-300 design:
•
Compact construction;
double standard width of SIMATIC S7-300 SM modules
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RJ12 socket for connecting the modem to the WAN
(leased line or dialup network)
•
9-pin Sub-D connector with an RS232 interface for connection
to the serial interface of a communication module, e.g. TIM
•
9-pin Sub-D socket with an RS 485 interface for connection to
the serial interface of a communication module, e.g. TIM
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用于连接24 V DC的4针插件端子条
外部电源电压
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Front-panel LEDs indicating TXD, RXD, DTR, RTS/ONL,
CTS / RI和DCD
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简单安装;
on a mounting rail of the S7-300, or on a 35 mm standard rail
•
The SINAUT ST7 modems can be operated without a fan
©Siemens AG 2014