Our most basic SCADAPack RTU, the SCADAPack 100, includes four analog inputs Three are configurable for 0-5 v or 0-20 mA, and one is dedicated to monitoring the power supply so is 0-32 v. This model also includes six configurable digital I/O points. It's got two serial ports which can be used for programming the unit or for communication with other devices. (or left unused)
Knowing this is a school project, I'm not sure how you intend to acquire the hardware (a SCADAPack in this case). You might find one used on eBay or elsewhere. Or if budget allows you could contact the sales company in your region and buy a new one. If you let us know where you are we can direct you to the appropriate sales representative.
The SCADAPack 100 is typically programmed with our Telepace Studio software, and a TBUM297217 serial programming cable. There are some programming examples and some Youtube videos available if this is the route you'd like to go.
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This is a known issue with some older J Series radios. Please contact our Tech Support team, including the following:
- A screen capture of the error message
- Radio serial number (or numbers)
- Current firmware in radio
- Firmware version you are trying to upgrade to
Tech Support contact information:
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Note first that these comments refer to Trio Q firmware 184.108.40.20646 or newer, when installed in ETSI-type radios. QAM and the related features will be available in the very near future for FCC-type radios.
Dynamic Policy and the related features have a significant amount of "Help" in the web browser if you click the "More help..." blue link by each item. Also, this topic is discussed in some detail in the Trio Q user manual, which will be installed on your computer when you install the TView+ Management Suite software package.
This software can be downloaded from the se.com website. Go to Products, then Telemetry and Remote SCADA Systems, then scroll down to Data Radios and select either the Licensed or License-Free radio type. On the page for your radio type, select the Software and Firmware tab, and TView should be near the top.
On page 44 of the December 2019 version of the Q user manual there is quite a bit of information about each option for Dynamic Policy. Near the bottom of the page, in the ARQ section, the manual states:
When the Dynamic Policy is configured as ARQ, the RF data rate selection by the radio is determined by the ARQ retry rate. If the currently selected RF data rate is too high to support reliable reception of transmitted packets, ARQ retries will be required and the packet retransmitted. ARQ retries are transmitted at progressively lower speeds to ensure delivery. The aim of the algorithm is to choose the optimum RF data rate of the initial packet transmission and maintain an ARQ retry rate of between zero and 1%. This policy is only available in QAM mode...
The Beacon ID is used by Remote radios to ensure they are following the beacon of the correct Master radio, as it is possible there could be more than one Master that the Remote radio can hear.
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Sounds like you are attempting to do a Broadcast firmware upgrade to several Q radios. (or perhaps just to one radio, but over the air) An informal procedure for doing this is attached. A couple of notes to be really clear about:
- It's critical all devices (computer port setup, software tool, ALL radios) use the same IP mask
- The entry point radio must have its filtering firewall set to Allow All. (at least temporarily)
If you continue to have issues after following the attached procedure, please contact our Tech Support team. They can typically deal with time-sensitive support issues more quickly.
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First, what is fade margin? It’s the difference between a radio’s sensitivity (minimum signal level it can decode data) and the actual received signal level. Higher fade margins can provide more reliable data radio links.
Any radio has an engineered receiver sensitivity, measured in dBm. (decibels relative to 1 milliwatt) This should be specified in the radio’s data sheet or brochure. The older Trio MR450 data radio, for example, has a sensitivity of -106 dBm at a 9600 bps over-the-air data rate, while the QR450 has a sensitivity of -113 dB at 8 kbps. Sensitivity goes down as data rate goes up.
The link between two radios can experience an event called “fading,” in which changing atmospheric conditions causes the signal level to drop. This can be quite significant at higher frequencies. And if there is any noise (eg from atmospheric conditions or electrical equipment) or interference (from other radios nearby) the radio needs the signal to be stronger to hear it well.
Under typical conditions with radios using modulation types such as CPM (continuous phase modulation), the wireless industry has typically specified a fade margin of at least 20 dB to provide reliable paths. For example, if a system is operating at 24 kbps over-the-air, and the sensitivity at that data rate is -107 dBm, all paths must be designed such that the actual received signal level is -87 dBm or higher.
When testing wireless paths using software such as Pathloss or Radio Mobile, if the fade margin is not achieved the designer may choose any of several options:
Increase antenna height to get the antenna above obstacles
Select antennas with higher gain
Reduce the radio data rate to get better receiver sensitivity
Add a repeater between the sites
Sensitivity of a new data radio is tested at the factory by pushing a constant data stream through a pair of radios in a carefully-controlled lab environment. The data stream entering one radio is compared with the data stream exiting the other radio, as signal attenuation between the two is increased. Eventually the signal will be weak enough that errors will begin to appear. The software tool tracks these errors, and the test ends when it’s found that (on average) 1 bit in a million is wrong. The signal level at this point is stated as the radio’s sensitivity at that data rate.
A “1 bit in a million” bit error rate is typically stated as a 1x10 -6 BER. Note that some manufacturers have in the past stated the radio’s sensitivity at a 1x10 -4 BER. This is only 1 bit in 10,000 instead of 1 in a million, so the sensitivity appears better. Not really a fair comparison.
A value of 0 dBm is 1 mW. Transmit power is typically specified in positive numbers eg +40 dBm is 10 watts. But receive power (coming in from the antenna) is measured in negative numbers. For example, -70 dBm is a common value. For each 10 dB decrease in received signal level, the power in milliwatts is reduced by a factor of 10. So -70 dBm is a very tiny amount of power... 0.000001 of a milliwatt, or 1 picowatt !!
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Just a bit of historical background. The buttons were initially available for configuration of the MVT. However it was necessary to lock them out in order to ensure regulatory compliance. All configuration changes must be made by the Realflo software, and logged by Realflo.
Presumably the firmware could be modified to allow the buttons to be used as digital inputs to the Modbus database, but that would be a major project and the likelihood of that being considered now is extremely low.
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Hello again Loren,
OK, so the distance is more reasonable for Accutech. But still the temperature (95 to 120 deg C) is not suitable for Accutech. Unless your SI changes their story, I suggest you move on to consider a different solution.
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Hi again Loren,
OK, understood. The photograph makes it look like the base radio will be very NEAR to the rotating drum, not 1.5 kilometres away!! I think I can actually see a bit of a rotating drum structure in the photo of the base radio enclosure. Or am I confused? I would strongly suggest that the Accutech base radio be installed near to the rotating drum. You could add a Trio K Series point-to-point radio system to transfer the data over that 1.5 kilometre distance much more successfully.
If the distance from the TC10 field unit to the Accutech base radio is 1.5 kilometres this solution (from a purely wireless perspective) is far more challenging. You could use a high gain yagi (directional) antenna on the base radio, installed above all local obstacles, to partially offset the distance, but the TC10 would still need a no-gain internal antenna. The signal might be sufficient to reach the base radio when the TC10 is at the top or at the bottom of the rotating drum - its omni antenna would then be parallel to the base radio's antenna for best signal transmission. But if any local obstacles (near the rotating drum) maybe only when the TC10 is near the top, above obstacles. You would have to test this in the field.
The primary issue remains temperature rating, however. A TC10 field unit has a maximum temperature rating of 85 degrees Celsius. I can't see how you could protect the TC10 for a long time - if the rotating drum and its furnace are running for many hours the temperature inside the protective enclosure will slowly rise towards 120 degrees unless you actively refrigerate the enclosure. If you have some idea about how to do that successfully, great !! But remember that any enclosure around the TC10 will further reduce the wireless signal level, especially if there is a metal layer.
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First, I'd like to clarify one item. The Subject line says "TC10 in a rotary Furnace". From the photos you have attached, it appears the thermocouple only would be in the furnace. The Accutech field unit itself (TC10) would be mounted on the OUTSIDE of the rotating drum. The TC10 housing would likely see a higher than ambient temperature, but 120 degrees?? Or is it 120 degrees INSIDE the rotating drum?
If the temperature outside the drum, where the TC10 would be mounted, is 120 degrees Celsius, then unfortunately Accutech will not be the right solution. If however the 120 degree temperature is only inside the drum, a thermocouple can easily withstand 120 degrees and that will not be a problem.
From a wireless perspective, this is a complex environment. The base radio antenna would need to be an omni-directional type (mounted vertically), and installed at a location that can "see" from one end of the rotating drum to the other without obstructions. The TC10 field unit would be equipped with just the standard "internal" antenna, as the distance is short. A yagi (directional) antenna could not be kept pointed at the base radio, so that is not an option.
As the drum rotates, the signal level would change significantly due to changing antenna polarization on the TC10. But as the distance appears fairly short (perhaps 100 metres?) the loss caused by this may be acceptable. The primary issue will be the added loss as the barrel rotates the TC10 around to the far side, away from the base radio. If there are some structures above or on the far side of the rotating drum, these may allow reflections of the wireless signal to reach the base radio.
If the wireless signal is lost when the drum rotates the TC10 away, this may not in any case be a problem. If the temperature is not changing very rapidly, it may be OK to miss transmissions sometimes. (eg 1/4 of the time) The polling system would need to be designed to accept that only about 3/4 of the messages would be successful.
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The Schneider Electric YouTube channel has helpful short videos discussing features and capabilities of many of our products and solutions. You can find our channel, and subscribe if you like, simply by going to youtube.com and doing a search for "Schneider Electric channel."
Numerous Trio videos have already been created, and more are coming. Here is a list of videos as of March 2020:
Quick-Start Videos: Trio Q Series Licensed Radio – Wizard Demonstration https://www.youtube.com/watch?v=O2orINBzzyE
Trio K Series License-Free Radio – Wizard Demo https://www.youtube.com/watch?v=I1uZ7ZB2vBw
Trio M Series Licensed Radio - Basic Configuration https://www.youtube.com/watch?v=UvHjz-NOBwE
Trio J Series Configuration and TView+ Diagnostics https://www.youtube.com/watch?v=9bz_TpZYn40
General Ethernet Radio Info: Trio Ethernet Radios – Internal Diagnostic Features https://www.youtube.com/watch?v=xDkGOsxPxIU
Trio Ethernet Radios - Modbus Gateway and Serial Server https://www.youtube.com/watch?v=Ys-HNGLQv0k
Q Series Data Radio: Global Firmware Updating for the Trio Q Data Radio https://www.youtube.com/watch?v=wgtK_jl_YnA
Trio Q Data Radio – IP Routing Benefits & Configuration https://www.youtube.com/watch?v=sot8NgDrusw
Trio Q Series Licensed Radio – Dynamic Speed Mode https://www.youtube.com/watch?v=qohNvrQgrHg
Trio Q VHF Data Radio - Advantages and New Features https://www.youtube.com/watch?v=cl8yL1aPJQ8
Trio Q Data Radio Alarms and Events https://www.youtube.com/watch?v=GzxzoiLm8Qc Trio Q Data Radio Compatibility with Trio E Series https://www.youtube.com/watch?v=zlPooeEyOgk Trio Q Data Radio - Multi-User Access https://www.youtube.com/watch?v=U0uyjl_6hSA
The Trio Q Data Radio Text User Interface https://www.youtube.com/watch?v=vILlyk5CAC0
Create a Trio Q Data Radio Point to Point Network https://www.youtube.com/watch?v=iEkbF11g-No
J Series Data Radio:
Trio J Data Radio - Setup a Point to Point Network https://www.youtube.com/watch?v=FPbFYjj8KWY
Trio J Data Radio Spectrum Analyzer & Channel Lockout https://www.youtube.com/watch?v=g8Sv88mxkj0
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