Slow communication between Citect SCADA and Quantum 140 CPU 671 60 with NOE Ethernet module results in long time SCADA's screens opening.

Any body can help with this problem? Thank you in advance!

Chris

 

Upgrade your Modnet driver to the latest released driver v2.06.09.002 and use the Modnet20 protocol in your project. Grouping data in the PLC of similar datatypes is desired as it makes it possible for Citect to block read all the data it needs in less requests, which allows for the desired performance you request for your Quantum. Also suggest sort your Variable.dbf by Units/Types/Address using the Save_DBF.xls macro. While your at it, might as well Upgrade to v7.0 of CitectSCADA.

Cheers,
Nathan Slider

 

Upgrade Modnet driver doesn't help. I group data on PLC and sort data in Citect by address - also doesn't help.

Upgrade to v7.0 of CitectSCADA - It's impossible, we don't have license for new software.


I observe that when I turn off redundancy on Quantum, communication is better (almost perfect). When I turn on redundancy on Quantum - communication is slow (average 1.5 s for one screen). There is a direct relationship between program cycle and communication speed, the shorter cycle the communication is better.

Pablo

 

Chris:

Please describe your Unity Pro application that is running in your 140CPU767160 Controller. Was the application converted from a previous Concept Hot-Standby application or was it created new? Also please provide me with the firmware level of the 140CPU67160 and the 140NOE77101 or 140NOE77111 module. It would also be beneficial to know the exact version of the Unity Pro XL software that you are using. Please include the version number and any service pack that you have installed.

 

Description of application:

-Configuration:
1. Local I/O Quantum Drop - 140 CPS 114 XO, 140 CPU 67160, 140 NOE 77100, 140 CRP 93x00
2. Remote I/O Quantum Drop - 140 CPS 114 XO, 140 CRA 93x00, 3x ACI 040 00, 2x ACO 130 00
3. Remote I/O Quantum Drop - 140 CPS 114 XO, 140 CRA 93x00, 5x DDI 364 00, 2x DDO 353 00
4. Remote I/O Quantum Drop - 140 CPS 114 XO, 140 CRA 93x00, 3x ACI 040 00, 1x ACO 130 00, 1x DDO 353 00

-Derived FB Types:
60% of application was written in accordance with functional blocks

-Variables & FB Instance
There were used about 10 000 data located and 2500 data unlocated.

-Communications:
Communication with SCADA takes place in Ethernet. For writing and reading the registers, I use the WRITE_REG and RED-REG blocks.

There are about 50 devices in the complex, which are cyclically inquired.

We use the converters MOXA NPort 6110 for reading the data from the devices (the converter from RS485 to Ethernet).

-Program:
Program is written mostly in FBD language and partially in ST.

>Was the application converted from a previous Concept Hot-Standby application or was it created new? <

The application was converted from a previous Concept Hot-Standby application and there was a new RACK (4. Remote I/O Quantum Drop) added.

> Also please provide me with the firmware level of the 140CPU67160 and the 140NOE77101 or 140NOE77111 module. <

The 140CPU67160 (PV15) processors were tested by the producent if they weren't from the defective serial production. The processors are OK.

Unfortunately, for the time now, I don't have data concerning the version of firmware of the devices.

Because the system in the complex has been developed, we exchange for new only the processors, the other modules, e.g. 140NOE77100 remain the same (they were bought in 2005).

> It would also be beneficial to know the exact version of the Unity Pro XL software that you are using. Please include the version number
and any service pack that you have installed. <

I use the Unity Pro XL v3.0 - 70612 software. I've installed the communication protocols from Driver Pack v2.4. From the protocols I've installed (for the Windows XP Professional system):
1) ETHWAY - Ethernet (V1.4 IE05)
2) MODBUS Serial - Port COM Setup (V1.6 IE29)
3) UNI-TELWAY - Port COM Setup (V1.9 IE20)
4) USB for High End PLC Setup (V1.2 IE17)
5) XIP - XWAY on TCP/IP Setup (V1.10 IE22)
and Drivers Manager stand alone Setup V2.4 IE17 - NetAccess V1.3 IE12.

Pablo