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I have attached the file again.http://files.engineering.com/getfile.aspx?folder=dc452358-fb5d-4bcb-b12d-377deea315c3&file=4_telco_matrix_Rev_B.gen

I recently performed the same task using a different PLC. What is the model of the PLC you are using?

I was able to open the program you sent. There is a logical bug in the way you are energizing the outputs. There are multiple conditions energizing relay output. I have attached the correct program. Try this and let me know.

Are you able to attach the file in pdf?

Do you have the model number of the unit? All I need is one port on RS-232 DB-9 Male converted to ethernet. I need to be able to assign IP address for the convertor.

I have a PLC with RS-232 output. My customer does not want to use a laptop to download data from the PLC. He wants to use ethernet connection and download remotely. Are there RS-232 to ethernet convertors available for this kind of application?

Omron model H5L-A has two independent 7 day timer relays.

I am trying to print from the unitronics PLC, Vision 120 using RS-232C. Here is the link to the printer specs: http://www.ded.co.uk/data_sheet/Data_dpt510.html or http://www.martelinstruments.com/products/panelspecification/mpp5310.htm I would appreciate if you can help me with this.

The sealing stress is a function of gasket type, material and flange surface finish, thickness, size and number of bolts, operating pressure, temperature, type flowing fluid, etc. I would suggest you contact the gasket manufacturer and give them the details of your design and they can give you...

I have an application that uses regenerative blower for moving air. How do I control the air flow rate (actually the speed of the blower)? I have a PLC that is used to control lot of other parameters my system. I am wondering if I can use the same controller. I would appreciate any help I can...

Can some please tell me where to find the design data for Laminar Flow Elements?

Is ANSI Z540-1-1994 the latest version? If not, how can I get the latest verion? Thanks for your attention and help in advance. Nagaraj

Hi I have a stack that uses self averaging pitot tubes to measure the stack mass flow rate and sends a HART signal (4-20mA). I want to know if there is a company that manufactures Auto-Moisture purging system for the pitot tubes. Hot gases will be flowing through the stack. Thanks

imok2 I appreciate your answer. What is Pv? Can you please let me know the source where I can find the theoretical or empirical calculations?

I was wondering if the velocity at the inlet planes of the nozzles of a multipoint probe is constant for all the nozzles. Are there any published results or a way to calculate this?

What the statement means is, when the flow velocity increases, the static pressure decreases and vice versa. This is the basic Bernoullis' principle. The total pressure = Static pressure + Dynamic Pressure is always constant.

I am measuring air flow rate. The flow rate is a function of the pressure difference and the density of air. Hence, I think we have to make the conversion everytime we use the flow meter in conditions other than what it was calibrated? Correct me if I am wrong. Thank you for your responses. I...

I calibrate a venturi flow meter at non-standard conditions. I know the calibration is not good at a different location where the barometric pressure and temperature are different. How do I convert the displayed flow rate to actual flow rate? What is the best way around having to convert...