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Vidmas30 last won the day on December 7 2014

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About Vidmas30

  • Birthday 07/19/1980

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  1. Yes, ping goes well. Tried with another Unistream controller at my office, everything's fine: reading information from controller with two different PC's at the same time. Don't know what could be the issue at the customers plant? Will try to look closer . Thank you!
  2. Hi, Orso, Thank you for your answer. Interesting, because now it doesn't seem like that - new system (master) gets timeouts while trying to connect to Unistream (slave) then at some point connects, reads information and it happens all the time. Seems like it cannot connect while other master is connected..
  3. Good day, I have an application where Unistream PLC is a Modbus TCP slave (default port 502). Until now there was one master that was reading all required information from Unistream. Now customer wants one more master to read from this PLC. How could I do it correctly? when I try to add Modbus TCP slave2 with different port, I get error message that both slaves are set to the same communication protocol. What I'm doing wrong? Thank you in advance!
  4. Good day, One of our customer's PLC's snap-in module (E4XB) got damaged. It was used for 4AI (4..20mA) measurement (connected 4 sensors) and communication with SCADA system. Recently they tried to change one of the damaged sensors and suddenly all 4 channels stoped working (all MI's attached to particular channels show 16384 values with sensors connected or disconnected). Tried to change hardware settings via jumpers, nothing helps. Question: is there any point to look for some electronic parts damaged on E4XB or it will be just a waste of time and we should just replace with new one?
  5. Thanks for reply, Joe, The thing is we need a solution without protocol (such as Modbus that requires additional programming) between one end and another i.e. instead of control cables that goes let's say from push button to contactor, we want to solve that with remote I/O modules like we have direct connection (connect push button to PLC I/O and contactor to remote I/O). If i'm right URB-TCP and EX-RC1 allows that. If you suggest ethernet (URB-TCP) I think we'll stick to that solution. Thank you!
  6. Good day, We have a project in existing plant. Now there is one main control cabinet with lots of on/off switches and etc. (no PLC) and lots of control cables goes to different objects (I/O devices such as remote switches and etc.). We want to eliminate those control cables in such way: build new control cabinet on one side of plant with Unistream OPLC and I/O modules and one control cabinet with remote I/O adapter and I/O modules. There are two choices - 1. to lay optical cables (two in separate trays for reservation in order one fails (rats and etc.)) and use remote ethernet I/O adapter URB-TCP with I/O modules or 2. lay cables for CANbus communication and use EX-RC1 with I/O modules. What option is more reliable? Thank you in advance.
  7. Good day, I have a question: SI103..106 sockets 0..3 TCP/IP Keep alive integers. Since V700 has 8 sockets, which Keep alive integers are for sockets 4..7? Thank you.
  8. Thanks for the quick feedback, Joe! Attached information about magnitude All the infomation I'm reading is INT32.
  9. Hi all, I use US5-B10-TR22 to read data from Modbus slaves. Technical documentation of slaves gives such information (see attached picture). Could someone tell if in US5 is the same byte order (didn't find that information). As for now everything looks OK, but I'm afraid that there could be a problem when there will be large numbers accumulated. Thank you in advance.
  10. Thanks, Joe, Yes, it would be great to hear some information how PLC sorts this under the hood. Because if you need to use "Active" bit to make sure everything goes in order, then this "periodic" feature has no sense..
  11. Hi, all, Some update: after some experimenting and reading, I found that tried to use not right approach - I tried to do separate struct for each of slaves with all the variables I need to read. So there were 37 operations with every slave. Then I used an arrays of INT32 (electricity metter gives information that way). Since in one operation metters can give 50 words (and I need 50 INT32's pf which 47 are consecutive), I ended up with 3 operations - 1st for 25 INT32, 2nd for 22 INT32 and 3rd for last 3 INT32. With periodic, when there are 2 operations it works flawless, but when there are 3 operations and set for every period 1000ms, there are problems (dropped increments). Then I set different times in every period and it helped. Could someone give more detailed explanation what this time setting in "every period" means? And how exactly PLC does read/write of the slaves according these settings? Because when looking to sessions counter, it looks like it goes simultaneously. With 2 slaves (I have on my desktop) it works just fine, hope everything will be ok with all 8.
  12. Good evening, all, I have a project where UniStream US5 controller with RS485 port is used to read data from 8 electricity meters. These are exactly the same model and parameters quantity and type also the same. I thought about making a struct for one meter with all variables needed and then copy and change struct name so I don't have to enter each of these variables for each meter. But there's no way to copy struct in UniLogic. Maybe someone of you has done something like this and can share some advice? One more thing: since no special logic needed, I'm planning to use PLC Communication Modbus Master's dialog to add slaves, enter all required data variable (about 50 each meter) and use toggle bit for each of the meter. I wonder if it's the best way to do this, because I need to read about 50 variables from each of slaves. Your thoughts about this would be highly appreciated. Thank you in advance.
  13. Hi, everybody, We have strange situation - we prepared Jazz PLC (JZ20-J-T40) for local boiler room control and for data collection to BMS system (for that we configured Jazz as a slave with JZ-RS4 comm module (RS-485)). BMS was made by other company(they used Schneider SmartX controller AS-P). They get all the information, but in our cabinet all LED pilot lights and LED indication lights of relays that connected to PLC's outputs are flickering. If we disconnect modbus cable, everything is fine. When connect back - LEDs flickers. BMS company (their modbus cable) says the cable is fine, properly grounded and etc. What could be the cause of that strange behaviour and what could we do to prevent that? Thank you!
  14. Maybe I expressed myself wrong - I mean I used SMS send routine from given UNIlogic example and used it several times for different alarm state. Maybe I've done it wrong and when several occure at the same time, not all messages are sent. Maybe there is some example where is shown how several messages are sent right way?
  15. Everything went fine - all system works as it should. Old PLC's touchscreen is not working: when checked through SI, X coordinate when touched shows 0, Y coordinate changes accordingly. PLC itself works fine. I wonder if there is possibility to replace touchscreen?
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