[FUN] Stand-alone FF Controller

[Stephen Mitschke]

To my knowledge, the only solution that does not require a host for otherthan configuration is the DAQ station from Yokogawa. The video recorder canbe used for your indication and then the FF network for the control itself.Access to the other registers beyond the number of traces available on therecorder will have to be via your configuration equipment.This configuration will also allow you to connect it to a host in the futurewhenever you are ready.IanSyncrude Canada Ltd.> -----Original Message-----> What is the best way to implement a single control loop using a FF > transmitter? I want the diagnostics capability of the FF transmitter but> do > not have a FF enabled DCS in the area. Any help will be greatly > apprecaited. Thanks in advance.> > Tom HustonEquistarchem

[Stephen Mitschke]

> Yokogawa has a FF paperless recorder, DAQSTATION.> Attached file shows a image.> This device has a FF link master function and a web server function> to connect client PC.> > (See attached file: Daq_e_1.pdf)> > Best Regards,> Takehiro Ishikawa,> Yokogawa Electric Co.> <<Adobe Portable Document>>

[Stephen Mitschke]

> Dear All,> > Smar has a standalone FF controller called DFI302, which also happens to> be> a linking device between HSE and H1.> This linking device is connected to the Ethernet network, and configured> through a FF configuration tool.> > But I believe that the question was about the simplest way to implement a> control loop. And the answer to this would be to have the pressure> transmitter directly connected to the Valve through a Fieldbus H1 network.> One of the devices must be configured as a Link Active Scheduler in order> to> have communication between devices, and each device should have the> necessary function blocks like AI, PID, AO and maybe an AALM block.> > In order to connect this loop to a DCS without Fieldbus capability the> DFI302 can also be used as a FF to Modbus converter, allowing you to get> the> diagnostic information from the transmitter to the DCS using Modbus RTU or> Modbus TCP/IP.> > Best Regards,> Claudio Fayad> Technical Manager> Smar

[Stephen Mitschke]

> Hello Ian,> We are just making pilot integration project to make automatic > uploading/downloading between field device and planning/maintenance system> > (for evxample in situation, when broken device has been changed). The > prblem, which we have recognised, is that there are no common way of > identifying the decice which we can recognise from OPC Server interface > (Syscon). What is your suggestion to this problem?> > One possible is that you must first set Instrument Position Number to > PD_TAG parameter of the device with configurator in maintenance room and > then go to field and place the device into the bus. Then there appears > problems with some OPC Servers (Syscon): it dont show the PD_TAG.> > What are the plans of Sycnrude in this topic?> > With collaboration regards> > Jorma> VTT - Finland

[Stephen Mitschke]

> Ian:> Smar's System302 provides another possible solution for "stand-alone"> installations.> > Using a laptop computer, System302's DFI (Digital Field Interface) Module,> and Smar's configuration software (Syscon) users can configure and> download> their control strategy to "stand-alone" segments via the DFI's integral> HSE> Port. Once the strategy is downloaded, simply disconnect the DFI Module.> > Power to the segment is provided by a "stand-alone" power supply with the> ability to drive up to four (4) individual Fieldbus segments. Displays> available on Smar Devices can be programmed to display information from> the> individual transmitter as well as other transmitters in the segment.> > Diagnostics, communications, and control modifications can be carried out> by> simply reconnecting the DFI Module. Hope this information is useful.> Best Regards,> > Dave Evans> Smar International

[Stephen Mitschke]

> Jorma:> Go to "Export" and then "Update OPC Database" in Syscon. This should take> care of this.> Regards,> > Dave Evans> Smar International