Recent content by rabz

Greetings, ALU 201L is one of the MODICON COMPACT 984LL Family line of PLCs. MODICON 'MODSOFT" PLC Programming Software was used to programme this type of MODICON PLCs. MODICON MODSOFT Programming Software was running under MS DOS. Later MODICON "CONCEPT" Programming Software running under MS...

Why "India" in Particular? We are very close to Qatar and we could gladly do it! > I am from an EPC company in Qatar

THERE ARE SO MANY WAYS TO DO IT. IN MY OPINION, THE EASIEST WAY TO IMPLEMENT IT WOULD BE BY USING A "DRUM SEQUENCER" BLOCK. IT ALL DEPENDS UPON THE NUMBER OF OUTPUTS YOU WANT TO ACTIVATE/DE-ACTIVATE, AND UPON THE NUMBER OF STEPS. IF NOT, YOU MAY USE SHIFT REGISTER OR A COUNTER, OR EVEN A...

Of course you will get a communication error if the Micro PLC is connected by its TER Port using MODBUS Protocol. The TER Port + Comm. Cable support UNITELWAY ONLY!!. Hence it can not communicate in MODBUS. What you need is either: 1) Keep the present configuration and install a UNITELWAY...

Jorge, The answer is straight forward. Use the EXCHx Block in TwidoSoft. The Twido Manuals (both hardware @ Software) are self-explanatory. READ THEM!! I suggest that you set up the network on the bench and work on it. This is how we all learn: by reading then by implementing what we...

You are welcomed G Brown, I only wish that I could be of more help to you. But Industrial Communication issues are normally of sophisticated/complicated nature. I have been working in this field since 27 years, and believe me, every project I have worked on was entirely a "new" project...

The answer is NO. ONLY ONE USER AT A TIME!! Also, I wonder how could somone be in 2 places at the same time, trying to programme A single PLC!! Do you understand how dangerous this could be and what consequences it may lead to? Please weigh up what you have just said .. a QUANTUM PLC...

There is nothing much which you can squeeze out of 1200bps. This is a very low bandwidth, and it is not related to what communication protocol you may be using. I believe that your network design may not be optimum!! However, without enough data about the network and the...

MAKE A PLC!!! you will end up spending more money, that is if you could finally make one. Please, do not try to reinvent the wheel. Anyway, you either may: 1) Get Soft PLC (software plc) without physical I/Os, and run all the application programmes ,which you will be creating, in...

Frankan, NO COMMENT!!!

Frankan, This MODBUS Function Code is used in MODBUS TCP/IP, to have full control over a MODBUS Slave Device, including programming/re-programming if the said MODBUS Slave device is a PLC. You need to take extreme care when designing a MODBUS Ethernet Network, that this Function Code can...

Pravin, 1) You are again mixing up the commercial aspects with the facts of science. The QUANTUM DI Module you mentioned is about 3 times "more sensitive" to input status change (from 0 to 1 and vice versa) than the MOMENTUM DI Module in question. 2) The QUANTUM DI Module has a response...

Hisham, The answer is YES .. this could be logical. and the answer could also be NO .. this is not logical. The best one who can answer and determine this is you!! You need to study your process, piping grid layout, and ancillary equipment needs for Emergency ShutDown. If you can...

The answer is NO The volume and speed of data you wish to exchange between both the client and the server are irrelevant. If both sides are MODBUS Capable devices/equipment, then the data you want to exchange will have to be of TRUE MODBUS Nature. All you need to do is to start the...

The given Momentum Discrete Input Module Part Number of 170ADI35000 can not handle this type of fast input switching. You are left with 2 practical solutions: 1) Install a 170AEC92000 High Speed Module or 2) If you have spare Analogue Input Channel (4-20mA, etc.) in your system, you...