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  1. Hello,   I need to communicate a Datalogic Qw2120 ( with a USB connector  )  to a Modicon M251, it has a RJ45 Serial, i don´t know where to start , can anyone please give me a hand ? I would appreciate it very much.    
  2. Hello,   I need to communicate a Datalogic Qw2120 ( with a USB connector  )  to a Modicon M251, it has a RJ45 Serial, i don´t know where to start , can anyone please give me a hand ? I would appreciate it very much.
  3. My issue is trying to receive data from a Datalogic PM9500 barcode scanner onto a Siemens ET200S (IM151-8 PN/DP) CPU using a serial interface card (6ES7 131-4BD01-0AB0) with the ASCII Protocol. The software that I'm using to program the PLC is TIA Portal V14. I made use of the built-in function block S_RCV to try and receive the data into a data block that I have created. I connected the Datalogic's base charger unit directly into the PLC's SI module. (I cut the DB9 plug off) So, Pin 5 (RXD) of the SI module is connected to the Tx wire (Brown) of the scanner, the Tx is also connected, as well as the ground, to the SI module, however, I only require the Rx. There is no flow control. Upon scanning a barcode, the Rx LED on the SI card flashes, indicating that something was received. I have tested the scanner using a terminal program called "Hercules", and I am receiving what I should be when I scan something. The parameters such as Parity, Stop Bits, and Baud Rate, etc, of the scanner corresponds to that of the SI module as well. I paramatized the S_RCV block as follows: 1.) EN_R is always ON. 2.) R is defaulted to the instance DB that was created with the function block's tag.  3.) LADDR  is set to "100" as that is the start address of my SI Module as defined in the device configuration. 4.) DB_NO is set to "2" as it is the number of the data block I created for storing the received data.  5.) DBB_NO is set to "0", which I understand to be the data blocks offset start point from where to start inputting the data. The rest of the NDR, ERROR, LEN, and STATUS outputs of the function block are also defaulted to the instance DB tags. I only want to see if I'm receiving the data from the barcode scanner into the datablock. I created an array of bytes and I also tried with characters  from 0 to 30 to store the data. As I mentioned, the problem comes when I'm trying to scan something, the RX LED on the SI module pulses, but when I monitor for any changes in the Function Block, as well as for any changes in the Datablock itself, nothing happens at all.  I don't know what If I'm missing something, this has been bugging me for some time now, I'm quite new to the whole programming scene, I would appreciate any help I could, get also I've attached the project file too. =)   Yumi_Panel.zap14
  4. Hello, I need to make an ethernet communication Siemens S7-300 <> Omron G9SP. The HW of the Siemens that i us are CPU 315 2DP and CP 343-1 Lean. I did try to follow the Omron manuals Z922 and Z924, but faced with some problems. First of all in Z924 there is no complete HW configuration of Siemens (communication configuration is missing). Also, formats of messages differ in both manuals. Maybe there is an Simatic Step 7 project example, that i could open with Simatic Step 7 manager to do a deeper investigation, or maybe somebody has a lot more experience in this case? Thank you in advance.   WBR @rturas

  5. Mitsubishi Safety PLC

    Nurlan_B posted a topic in Mitsubishi

    Hi everyone.  Is it possible use mitsubishi safety plc as logic solver for fire and gas detection system  on the plant ? 
  6. Hello, I'm looking to interface a USB barcode reader with a Micro820.  Is there anyway to interface a USB device with a AB PLC?  
  7. Good day, We are using Guardlogix 1756-72s controllers for our ESD system. We created safety add-on instruction in RSLogix5000 v20 and wanted to test it using RSLogix Emulate 5000, however we are getting an error that safety add-on instructions are not supported in standard controllers. Is there a way to test safety code using Emualate or Softlogix?

  8. Connecting Siemens S7-1200 to WMS

    JBird1229 posted a topic in Siemens

    I am curious as to how I can connect my Siemens PLC to a Warehouse Management System.    We will be scanning totes, from there taking the tote number and sending that to the WMS.  Then the WMS will send me back the desired lane number.   I don't know where to start on this task. Please help.    Thanks

  9. Writing access to Safety CPU

    Nizami_225 posted a topic in Mitsubishi

    Hello. I tried to read/write from/to safety cpu (QS001) over MC protocol. I managed to read from cpu devices but i couldn't write to any safety cpu device. It was possible to write data to Q series plc (Q02HCPU in my example) with MC protocol. I am searching any method of writing to safety cpu (QS001). If anyone could this before? And are there any settings in GX Developer (GX works) for access to writing to QSCPU? P.S: As known it's possible to read/write from/to Q series PLC with MX Component. It's also available reading from QSCPU with MX component. But cannot write to safety cpu with MX component (written in Mx component manual). Thanks.
  10. Several years ago before I arrived at my company, an integrator came in to do the automation on our system. They used a Controllogix 1756-L61S for the safety portion of the project. Apparently, when they completed the job they did not provide the source code with comments, safety password, etc. for anything and it got ugly between our company and theirs. In other words, they would not provide it if we went back to ask them. Allen Bradley has told us that we can not make any alterations now to the safety logic because we do not have the password that was used to create it. And they said there is no longer a master password that you could use like in previous controllers. Does anybody know of any workarounds for this? Or have heard of anything that might possibly work?
  11. Hello everybody, I'm designing a safety system for a HV power supply. The idea is to use a series of 2 contactors to supply power to the system controlled by a safety PLC. So, it is a typical application. The problem is that the power supply and the contactors are are installed on HV platform, isolated from ground, where the PLC is installed. I think the only possibility is to use an optic fiber link. Does any body know is there is any way to connect a contactor to a PLC output using an optic fiber link, without compromise the cyclical checking performed by the safety module (as I understand, the outputs are continuously check in order to detect wire breaking). The alternative that I have is to use a distributed IO system installed on the platform, connected with a Ethernet Optic Fiber to the PLC: for example using a simens S7-400 PCL with a IM467FO modules (on ground) and a ET200M system with a IM153-2FO module on the platform. But I wonder if there is something more simple and cheaper. Thanks!