edward2

I have setup several Data Collection Systems in the past using VBA code to read "data" from a ControlLogix processor via a DDE/OPC topic, and put it into an ACCESS database. The ControlLogix PLC would save 10-30 minutes worth of data, and then the VBA code would run every 10-30 minutes to retrieve the data and put it into the database. I'm now looking at a project that has two SLC500 PLCs and one CompactLogix PLC. I was thinking about using SoftLogix 5800 on my data collection computer to gather all of the "data" from the other PLCs, and store about 30 minutes worth of the data. Then the VBA code could read the data from the SoftLogix PLC and put it into the database. One of the reasons that I am considering this is that I don't want to make any changes to the three PLCs, since they were supplied and programmed by another company. Has anyone done this, and do you have any suggestions and/or comments? I assume that I could still use a DDE/OPC topic to communicate with the SoftLogix processor. Thanks,

I have a tough question for you.... Does anyone out there remember working on a Westinghouse Numa Logic PLC-300 series? Or better yet, do you have one that you could look at for me? I've got to replace one with a new control system and I was wondering what the current ratings are for the Numa Logic digital output modules. Here are the part numbers. What are the current ratings? NL-320L 4 channel digital output module NL-321L 2 channel digital output module NL-352L 6 channel reed relay output module Thank you, Edward2

Jay (or anyone else), I have a question about the WORD document you posted regarding how to create Data Logs. I have 2 CJ1M PLC's connected to 1 NS10 touch panel. I have created 1 data log group with 4 data points. I have setup a screen on the NS10 with a data log display per the instructions in the WORD document, which will trend all 4 data points in my data log group. My question is will the numerical displays in the lower right hand corner of the screen display the current real-time value or will they display the value based on the position of the yellow time axis cursor? A second question, is it possible to have different y-axis scales (min and max) for each data point trended on a data log display?

I am building a new control panel with 2 CJ1M PLC's and 1 NS10 operator interface display. My intentions are to use the 2 serial ports on the NS10 to communicate with both PLC's (Serial A connected to PLC #1 and Serial B connected to PLC #2). The problem is that I cannot figure out how to make the NS10 talk with the PLC's. When I download the graphics to the NS10 and reboot it, it hangs at the "Connecting...." screen. I have tried using NT 1:1 and NT 1:N, but I have not had any luck. Any suggestions on what I should try? Or which manual has the clearest explanation? I have read quite a bit so far, but I don't always understand what they are telling me to do. Thanks,

After reading some of the W339 manual, I'm starting to understand the different memory areas better, such as the work area, timer area, data memory area, etc. They sound somewhat similar to the Allen-Bradley memory areas, such as the integer registers N, the timer registers T, boolean registers B, etc. However, I'm still not comfortable with the different "Data Types" used in the Omron symbols table. The A-B PLC does not have "data types", because the memory areas are a predefined data type. Could someone possibly answer/explain the following? Looking at the analog I/O card in Slot 3: 1. I understand that D20200-D20218 setup the parameters for the analog input card in slot 3 (unit 2). What "Data Type" should these addresses be in the Symbols list? 2. I also understand that 2021-2028 contain the analog input values (0-4000). What "Data Type" should these addresses be in the Symbols list? 3. In one of the manuals, it shows using the MOV function block to move an analog input value from the 2001 address to the D00001 address. I recognize that 2001 is for Unit 0, but which 0 in D00001 is the Unit number? What address would I move 2021 to? What "Data Type" should D00001 be in the Symbols list? Also, it will not let me create an address D00001, it truncates the address to D1. Is that OK? Thanks again,

Thank you for the references. I had not looked at the W339 manual before. I have only just begun to read it, but it looks like it contains a lot of information about I/O addressing and the memory areas. Of course, the manual is about 800 pages. Holy smoke!!

I am working on my first Omron PLC, after working on A-B PLC's for the past 10+ years. Which manual explains how to setup I/O tags for all of your I/O? I have setup the PLC IO Table as follows: Slot 1 is ID211 Slot 2 is OC201 Slot 3 is AD081-v1 (Unit 2) Slot 4 is AD081-v1 (Unit 3) Slot 5 is DA041 (Unit 4) Looking at the analog I/O card in Slot 3: 1. I understand that D20200-D20218 setup the parameters for the analog input card in slot 3 (unit 2). What "Data Type" should these addresses be in the Symbols list? 2. I also understand that 2021-2028 contain the analog input values (0-4000). What "Data Type" should these addresses be in the Symbols list? 3. In one of the manuals, it shows using the MOV function block to move an analog input value from the 2001 address to the D00001 address. I recognize that 2001 is for Unit 0, but which 0 in D00001 is the Unit number? What address would I move 2021 to? What "Data Type" should D00001 be in the Symbols list? Also, it will not let me create an address D00001, it truncates the address to D1. Why? Thank you for any help that you can provide. Edward2