Questions tagged [siemens]

Siemens AG is a German multinational engineering and electronics conglomerate company headquartered in Berlin and Munich. It is Europe's largest engineering company and maker of medical diagnostics equipment and its medical health-care division, which generates about 12 percent of the company's total sales, is its second-most profitable unit behind the industrial automation division.

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PCB Layout Mentor Graphics - basic question about transmission lines and components

I am currently doing a PCB Layout for an amplifier and would like to know if there is any way to add a transmission line to the Layout. As far as I noticed there is no corresponding symbol for such a ...
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2 votes
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What is this SOIC-8 part from ST?

Marked "393" and "(ST)GZ439" or "6Z439" under conformal coat. Siemens DC/DC PSU section, near a UC3843B current-mode PWM controller, HF transformer, etc. Checked the ST ...
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What do you mean by 240Y / 131 V network specification?

I was referring an industrial control panel guide for North American market for the network specifications. The specification mentioned a voltage rating 240Y/131V. I am curious, how would one get a ...
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-2 votes
3 answers
291 views

What makes transconductance negative?

Quote... "transconductance is -1 amps/volt" Refer to this link for the source of my question... This reference lacks the negation of A/V while this reference includes it? I'm confused...to ...
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Contacts on Safety Relay

I'm trying to replace this Banner part (an E-Stop Safety Relay) with a Siemens part that will do the same thing. Originally, I had picked this replacement, but became concerned when looking at the ...
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ASi (AS-Interface), understanding Power Supply

Can somebody help me understand the ASi (AS-Interface) power supply. I think I understand how the data decoupling works (because of the induction voltage of the inductor). But I dont understand the ...
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Is it possible to change counter signal to analog signal in Siemens Logo?

Is it possible to change counter signal to analog signal in Siemens Logo? When Cnt is for example 4, then the Analog Threshold Block is going to giving out a high signal, else low signal.
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IO link sensors with PLC

This is probably a stupid question but I am new to IO link sensors. When using IO link technology with a PLC (siemens s7-1200) can you connect devices that are not IO link sensors? For example say I ...
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TIA portal - failed to establish a connection

I'm using TIA portal siemens v15.1 for my project when i tried to upload the code to the plc this error pops up. Appreciate anyone can help me in this issue
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Simatic Microbox PC

I just started my research studies and part of it is based on an assembly line which uses a Microbox IPC427E for automation. However, I have never used a microbox before and only have some experience ...
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Drive stepper motor with potentiometer in Siemens PLC

It is difficult for me to drive a stepper motor with potentiometer (position stepper motor with position potentiometer). I've done program, to see the value from potentiometer with NORM_X. I am using ...
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3 votes
0 answers
108 views

Identifying exact type of transistor

I can not identify the exact model of this transistor. It reacts as a bipolar NPN Si transistor with EBC pin configuration (first image left to right,) not ECB! This seems to be made by Siemens. ...
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PLC s7-1200 Ladder logic

I'm checking some software for PLC s7-1200 According to my knowledge current time will never be > max time. hence, the logic will never trigger [so the code following P_TRIG is useless] ? [I'm ...
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-1 votes
2 answers
568 views

Understanding ladder PLC logic

I'm trying to understand the flow logic of ladder language. Is it sequential like C/C++? "i don't think so" Particular case: I've been trying to something very simple but cant make it happen as I ...
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1 answer
92 views

Finding current over controllable voltage source using nodal analysis

I have the following circuit: Let me explain the diagram a bit first: I0 is current in that direction, V0 is voltage and 2 V0 is also voltage times two. V1, V2, and V3 are my nodes. The 'S' by the ...
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Switching outputs using ladder logic

I am new to programming in ladder logic and am trying to write a simple program wherein outputs Y65 and Y66 follow the sequence: Y65 turns on for 30 seconds. Y65 turns off. Y66 turns on for 30 ...
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Can anyone identify this manufacturer? "E3"?

This has everyone I ask stumped. The board is a Siemens 115U CPU (6ES5943-7UA11) from the Simatic S5 rack, circa 1990's. It has some LEDs and two SPDT, O-ring sealed toggle switches on the front, one ...
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3 votes
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Does anyone know what the heck this is?

I really hope I'm posting this in the right section. I was strolling down the street and looked up at this massive barrel object mounted to a utility pole. It's hard to tell from the pic, but it ...
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How to vary the voltage output depending on the changes in temperature?

I am working with the Siemens Logo8! PLC (0BA8 version) and the purpose of my circuit seems to be simple: If temp > 25°C then output voltage = 8V If temp < 25°C and >15°C then output voltage = 5V ...
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What kind of apparatus could this be?

I apologize in advance, if this isn't the right place to ask this. I want to find out, what kind of electronic device this is. The tape recorder is just on top of it, but I am talking about the device ...
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2 votes
1 answer
823 views

LCD connector repair [closed]

Does any one know if it is o.k to run a soldering iron over the connector with the fine black traces on in the photograph attached(or below I am new to pic posting :D)? I have an office kitted out ...
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2 votes
2 answers
2k views

GPRS data call using GSM/GPRS modem (Siemens TC35 and/or MC35)

I'm developing a data aquisition module, that amongst other things, it have to comunicate through GSM/GPRS module, since it will be a mobile application. I can connect to the module and send sms's ...
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6 votes
2 answers
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Why to use Siemens to measure high resistance?

I have a Fluke 87V and I can see lots of EEVBlog videos were Dave measure high resistance values, and instead of using the Ohms range, he goes to the Siemens range (nS actually). My question than is,...
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