Siemens Modem Module EM241 Functions and Features????

EM241 connects the programming software MicroWIN (the computer needs to install a modem, and then dials the number set by the other party's modem EM241) with the remote PLC CPU, which can monitor, change programs, and check errors. It is also possible to connect two PLC CPUs that are far apart to read and write data between the CPUs (network control).

What are the types of interface modules for the S7-200?

If understood by extension modules, there are at least four types, 1Digital (switched) volume expansion module EM221 222 223, 2Analog extension module EM231 232 235,3

Dedicated function module EM253 SIWAREX MS, 4Communication module EM241 243 277.

If understood in terms of the interface form of the communication module, there are at least four types, EM241, modem module.

EM243-2, AS-I communication module.

EM277, PROFIBUS-DP slave communication module (most commonly used).

Digital Expansion Module, Analog Expansion Module, Thermocouple and RTD Expansion Module, EM277 Profibus--DP Module, EM241modem Module, AS Interface Module, EM253 Bit Control Module, Ethernet Module, Internet Module.

Siemens S7-200 has many kinds of modules, more than 4;

1. Digital expansion module, 2. Analog expansion module, 3. Thermocouple and RTD expansion module, 4. EM277 PROFIBUS--DP module, 5. EM241modem module, 6. EM253 bit control module, 7. Ethernet module, 8. Internet module, 9. AS interface module

Power module, CPU module, IO module, communication module.

1 S7-200 series PLC features: It is a small PLC launched by Siemens (1) It is compact (2) Good scalability (3) Powerful command function (4) Low cost.

It is the ideal controller for all kinds of small control projects in the contemporary era. 2 Products of S7-200PLC:

1) CPU with a certain number of I-O points: CPU 221, CPU 222, CPU 224, CPU 226, CPU 226XM

2) Expansion modules: mainly:

Digital expansion modules: EM221, EM222, EM223 analog.

Expansion modules: EM231, EM232, EM235 Communication modules: EM277, EM241, etc. Other modules: special function modules.

It is very easy to compose controllers of different sizes. The scale of its control can range from a few points to several hundred points. S7-200PLC can easily form PLC-PLC network and microcomputer-PLC network, so as to complete larger-scale projects.

3 S7-200 programming software: step7-micro win32. The programming software makes it easy to program the PLC in a Winoows environment.

Commissioning, monitoring. It makes PLC programming more convenient and fast. It can be said that the S7-200 can perfectly meet the requirements of various small-scale control systems.

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Instrumentation, cylinders, hardware tools, servo motors.

A series of automated industrial control products such as labor protection supplies.

It is suitable for the automation of detection, monitoring and control in all walks of life and in various occasions. The powerful features of the S7-200 series enable complex control functions to be implemented either in stand-alone operation or in a network. As a result, the S7-200 series has an extremely high performance-to-performance ratio.

What model do you need? Is it the host or the analog ruler to measure the positive input module? City, please search for China Automation, see the Siemens PLC topic in detail.

If this problem is not very clear, you can consult the **Shang Shanghai Holding Automation Equipment** or Siemens Support**.