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Components and Libraries for HMI/SCADA applications, discussions, problems and suggestions
Question PascalScada Modbus RTU with Moxa problem
6 years 9 months ago - 6 years 9 months ago #6391
by Marcin
Replied by Marcin on topic PascalScada Modbus RTU with Moxa problem
Thanks for Your reply,
Yes, it's RS-232 and as I wrote earlier --> config is on Real Com Mode. Moxa supports the TCP_UDPPort, but the PLC i use have only RS-232 Modbus RTU interface (can't support Modbus TCP/IP protocol ). I don't thik that the problem is with the configuration or drivers. See the logs - send and recieve data. Also i tried Moxa with other scada and the configuration was the same. It was worked without any problems.
Yes, it's RS-232 and as I wrote earlier --> config is on Real Com Mode. Moxa supports the TCP_UDPPort, but the PLC i use have only RS-232 Modbus RTU interface (can't support Modbus TCP/IP protocol ). I don't thik that the problem is with the configuration or drivers. See the logs - send and recieve data. Also i tried Moxa with other scada and the configuration was the same. It was worked without any problems.
is-19 19:59:00.921, iocWriteRead, Result=iorNone , Written: 01 03 00 00 00 01 84 0A
lis-19 19:59:00.921, iocWriteRead, Result=iorOK , Received: 01 03 02
lis-19 19:59:00.922, iocRead , Result=iorOK , Received: 00 4D 78 71
lis-19 19:59:01.126, iocWriteRead, Result=iorNone , Written: 01 03 00 00 00 01 84 0A
lis-19 19:59:01.126, iocWriteRead, Result=iorOK , Received: 01 03 02
lis-19 19:59:01.127, iocRead , Result=iorOK , Received: 00 4D 78 71
lis-19 19:59:01.332, iocWriteRead, Result=iorNone , Written: 01 03 00 00 00 01 84 0A
lis-19 19:59:01.332, iocWriteRead, Result=iorOK , Received: 01 03 02
lis-19 19:59:01.333, iocRead , Result=iorOK , Received: 00 4D 78 71Please Log in or Create an account to join the conversation.
6 years 9 months ago #6396
by Fabio Luis Girardi
Replied by Fabio Luis Girardi on topic PascalScada Modbus RTU with Moxa problem
Thanks! 
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6 years 9 months ago #6407
by Fabio Luis Girardi
Replied by Fabio Luis Girardi on topic PascalScada Modbus RTU with Moxa problem
I don't understand (again 
): You don't have a PLC now, so you are using a simulator connected to the moxa?
): You don't have a PLC now, so you are using a simulator connected to the moxa? Please Log in or Create an account to join the conversation.
6 years 9 months ago - 6 years 9 months ago #6409
by Marcin
Replied by Marcin on topic PascalScada Modbus RTU with Moxa problem
Sorry Sir, My English is poor so maybe You can't understand of my post.
I tested it with a PLC, but now the PLC is installed on the cabinet far away from Me. PLC is connected to the PC with a RS-232. It's working, but there is a lot of errors communications, because of a long cable between PLC and PC(about 7 meters ). But you 're right, I also use the simulator, it's also not working. You can try it with mod_RSsim and Virtual serial port driver. Have the same effect without a moxa device. I tested PascalScada <--> program mod_RSsim - can send value from Hmi and can see the changes in Mod_RSsim, but can't see the changes on the HMI PascalScada when i try send the value from the simulator. Then I test the commercial Scada with mod_RSsim and I can see that: I can change the value on "Promotic" SCADA. When I tried to send some value in a simulator i can see the same value in "Promotic" SCADA. With PascalScada, when I'll send some value from simulator it' does't change on the HMI. Once again sorry for my English.
so maybe You can't understand of my post.I tested it with a PLC, but now the PLC is installed on the cabinet far away from Me. PLC is connected to the PC with a RS-232. It's working, but there is a lot of errors communications, because of a long cable between PLC and PC(about 7 meters ). But you 're right, I also use the simulator, it's also not working. You can try it with mod_RSsim and Virtual serial port driver. Have the same effect without a moxa device. I tested PascalScada <--> program mod_RSsim - can send value from Hmi and can see the changes in Mod_RSsim, but can't see the changes on the HMI PascalScada when i try send the value from the simulator. Then I test the commercial Scada with mod_RSsim and I can see that: I can change the value on "Promotic" SCADA. When I tried to send some value in a simulator i can see the same value in "Promotic" SCADA. With PascalScada, when I'll send some value from simulator it' does't change on the HMI. Once again sorry for my English.
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6 years 9 months ago - 6 years 9 months ago #6418
by Marcin
But what is with this log:
lis-29 09:58:56.438, iocWriteRead, dResult=iorNone , dWritten: 01 06 00 00 00 2D 49 D7
lis-29 09:58:56.438, iocWriteRead, eResult=iorOK , eReceived: 01 06 00
lis-29 09:58:56.438, iocRead , aResult=iorOK , aReceived: 00 00 2D 49 D7
I undestand that: Pascal scada write 01 06 00 00 00 2D 49 D7 and simulator response 01 06 00 00 00 2D 49 D7 but PascalScada can't read this? - ( in simulator the value was change correctly but in the HMI value was changed to 0. In PascalScada LOGs You can read 01 06 00 00 00 2D 49 D7 without the result on HMI
)
Next:
lis-29 09:58:57.672, iocWriteRead, dResult=iorNone , dWritten: 01 03 00 00 00 01 84 0A
lis-29 09:58:57.672, iocWriteRead, eResult=iorOK , eReceived: 01 03 02
lis-29 09:58:57.672, iocRead , aResult=iorOK , aReceived: 00 2D 78 59
In the simulator program i change the value from 0 to 45, Pascal ask with 01 03 00 00 00 01 84 0A and response from simulator is 01 03 02 00 2D 78 59.
Why in logs PascalScada can read correctly from simulator but can't decode it and send to the HMI from tag1
?
Cable is 1m betwenn 2 PC , baudrate was changed to the lowest, I use RS-232 for test.
I also try rise the WriteReadDelay time and nothing .
I don't know what I'm doing wrong
Replied by Marcin on topic PascalScada Modbus RTU with Moxa problem
I have a conclusion that PascalSCADA tries to send the same thing both times, so it's not a problem with PascalSCADA.
But what is with this log:
lis-29 09:58:56.438, iocWriteRead, dResult=iorNone , dWritten: 01 06 00 00 00 2D 49 D7
lis-29 09:58:56.438, iocWriteRead, eResult=iorOK , eReceived: 01 06 00
lis-29 09:58:56.438, iocRead , aResult=iorOK , aReceived: 00 00 2D 49 D7
I undestand that: Pascal scada write 01 06 00 00 00 2D 49 D7 and simulator response 01 06 00 00 00 2D 49 D7 but PascalScada can't read this? - ( in simulator the value was change correctly but in the HMI value was changed to 0. In PascalScada LOGs You can read 01 06 00 00 00 2D 49 D7 without the result on HMI
)Next:
lis-29 09:58:57.672, iocWriteRead, dResult=iorNone , dWritten: 01 03 00 00 00 01 84 0A
lis-29 09:58:57.672, iocWriteRead, eResult=iorOK , eReceived: 01 03 02
lis-29 09:58:57.672, iocRead , aResult=iorOK , aReceived: 00 2D 78 59
In the simulator program i change the value from 0 to 45, Pascal ask with 01 03 00 00 00 01 84 0A and response from simulator is 01 03 02 00 2D 78 59.
Why in logs PascalScada can read correctly from simulator but can't decode it and send to the HMI from tag1
?I suspect cable problem, baudrate too high (try lowering speed if PLC allows), and no or wrong RS485 termination (if you use RS485 on PLC side).
Cable is 1m betwenn 2 PC , baudrate was changed to the lowest, I use RS-232 for test.
I also try rise the WriteReadDelay time and nothing
.I don't know what I'm doing wrong
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6 years 9 months ago - 6 years 9 months ago #6420
by Marcin
Replied by Marcin on topic PascalScada Modbus RTU with Moxa problem
Yes, it's working with two HMI linked with the same tag and FrezeOnFocus=false .
Do You already know the reason?
.Do You already know the reason?
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6 years 9 months ago - 6 years 9 months ago #6421
by Marcin
Replied by Marcin on topic PascalScada Modbus RTU with Moxa problem
Even now, if I'm deleted one of HMI it's working!.
But working only with PascalScada <-> WirtualPortDriver <-> Simulator --> before with this configurations does't work.
(PascalScada <-->Moxa RealCom RS-232)< -cable->( RS-232 <-> Simulator) it's the same -not working .
(Simulator <->Moxa RealCom RS-232)< -cable->(RS-232 -<-->PascalScada)
it is working. I do'n understand that.
EDIT:
But working only with PascalScada <-> WirtualPortDriver <-> Simulator --> before with this configurations does't work.(PascalScada <-->Moxa RealCom RS-232)< -cable->( RS-232 <-> Simulator) it's the same -not working
.But if I do that:EDIT2:
(Simulator <->Moxa RealCom RS-232)< -cable->(RS-232 -<-->PascalScada)
it is working. I do'n understand that.
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6 years 9 months ago #6422
by Fabio Luis Girardi
Well, I'm not very good with property names. FreezeOnFocus don't explain to you what this property does on THMIEdit? Please tell me if yes or no, and if possible, suggest a new property name
Even if this property has a good name, I´ll explain what it does. If TRUE, when the HMIEdit receives the focus, it stops their update when the tag value changes. This was made for a more comfortable typing on it. If you set it to false, it only stops their update procedure if someone made some change on HMIEdit content.
Replied by Fabio Luis Girardi on topic PascalScada Modbus RTU with Moxa problem
Even now, if I'm deleted one of HMI it's working!.
Well, I'm not very good with property names. FreezeOnFocus don't explain to you what this property does on THMIEdit? Please tell me if yes or no, and if possible, suggest a new property name
Even if this property has a good name, I´ll explain what it does. If TRUE, when the HMIEdit receives the focus, it stops their update when the tag value changes. This was made for a more comfortable typing on it. If you set it to false, it only stops their update procedure if someone made some change on HMIEdit content.
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