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  1. NoHoCa

    MOSCAD to Wonderware - Pinout?

    There probably aren't many MOSCAD users here. But let me simplify my question in case someone tunes in: Has anyone had success connecting a MOSCAD Series 400 CPU (as FIU), using the Modbus MB2MPLC1 flash file, via a 3rd party protocol converter (serial-to-TCP) in order to use ModbusTCP I/O...
  2. NoHoCa

    MOSCAD to Wonderware - Pinout?

    Hello Motorola MOSCAD fans! I saw that with tongue in cheek. We are configuring a new Wonderware HMI data acquisition server. It will either communicate with a MOSCAD Series 400 CPU via 9-pin serial port, or via a serial-to-TCP bridge device. It was suggested to me that the DB-9 cable for...
  3. NoHoCa

    Maple Silver 520 OIT to Modicon address?

    ...for basic discrete and analog status displays. A conversion formula is used to convert MOSCAD table/column/row to Modbus address: Modbus = (Table * 2048) + (Column * 256) + Row + 1 I realize that this formula is for relative addressing, and that for absolute 5-digits we'd probably need to...
  4. NoHoCa

    Motorola MOSCAD/Toolbox, radio links?

    Thanks again Charlie. My question is probably more related to the configuration of the (relatively dumb) Maple 6" operator display. Maple tech support doesn't know a thing about how their displays are used, so I'll go find an online forum for that product. Clarification on the addressing -...
  5. NoHoCa

    Intouch Wonderware 9.0

    Here's the scripts I used in 3.0/10.0 for the AlarmViewControl object: #AlarmViewerCtrl1.AckSelected ( "Acknowledge SELECTED alarms in the client control." ); #AlarmViewerCtrl1.AckAll ( "Acknowledge ALL alarms in the client control." ); I suspect yours would be similar. Basically just read...
  6. NoHoCa

    Motorola MOSCAD/Toolbox, radio links?

    ...topic. Working with a generic Maple OIT, via RS232/Modbus, there is a formula to translate MOSCAD tags into Modbus addresses: Modbus = (Table * 2048) + (Column * 256) + Row + 1 I realize that this formula is for relative addressing, and that for absolute we'd probably need to add 300,000...
  7. NoHoCa

    Motorola MOSCAD/Toolbox, radio links?

    We inherited a SCADA system which uses Motorola MOSCAD ("-L" I think) hardware for RTU/store & forward operations. It uses "Toolbox" software for configuration and logic programing. Toolbox version 8.50, which runs on Windows 2000, supports up to 41 zones on a radio link. For example, radio...
  8. NoHoCa

    Brine flow measurement, non-contact

    I'm doing all I can to dissuade them from transit time. Turns out a budgetary quote on a 4" coriolis meter is about $50k, which is impossible for a non-revenue generating measurement. Mag with upgraded electrodes will be our hard sell, although I did find some merit in considering vortex...
  9. NoHoCa

    Brine flow measurement, non-contact

    I suspect they've experienced electrode fouling on similar applications. Usually they're this adamant when they've been bitten.
  10. NoHoCa

    Brine flow measurement, non-contact

    Our client wants to measure the flow rate of a brine stream (reject from RO/NF). It's closed pipe on the discharge of a centrif pump. They say they don't like mag meters but would consider ultrasonic if it's not "too expensive". I'm thinking coriolis is elegant but perhaps costs more...
  11. NoHoCa

    Stream gauge design

    Terry - thanks for the suggestion, and yes I'm in Ca. I may follow up on this. bltseattle - That ITRC report is very informative, mainly because it compared level sensors in real world conditions. It helped to quantify a suspicion I've held that ultrasonic sensors could have more variability...
  12. NoHoCa

    Stream gauge design

    Hmmm... thanks for the info. But perhaps I should clarify that we're making improvements to a *permanent* flow measurement station, logging 24/7/365. Another consultant is developing a stage-flow curve. I just need to ensure that the level measurement is accurate. My concern is mounting the...
  13. NoHoCa

    Stream gauge design

    ...level sensor is strapped to a stake which is driven into the streambed near one bank. The client is not sure they get good data from the sensor. *Assuming* the sensor is working and correctly ranged/calibrated, I need to consider alternative installations. We don't want to dig a separate...
  14. NoHoCa

    Can DPDT hand switch pass 120Vac & 12Vdc without interference?

    ...I would bring multiple analog signals into the PLC and use a software selector from the operator workstation HMI... Thanks JL. But what I neglected to mention is that in the case of a PLC failure (very unlikely), the old system must operate on its own. I guess that's the root of my...
  15. NoHoCa

    Can DPDT hand switch pass 120Vac & 12Vdc without interference?

    I think what you're saying here is yes, but no. Are dual-rated switches easy to find? Your comments about noise and coupling are exactly what I'm concerned about. Unsure if there are other solutions that I'm just now aware of since I'm not that familiar with electrical switches and supply...
  16. NoHoCa

    Can DPDT hand switch pass 120Vac & 12Vdc without interference?

    I'm tasked with adapting an old hard-wired control system to be a manual backup to a new PLC-based system. An operator must be able to designate which analog signal (4-20 mA) controls a pump by using a hand switch. Easy enough to route either one analog or the other through the contacts of a...
  17. NoHoCa

    Remote data logger/OIT for WW-SCADA application?

    Apparently Chessell and Yokogawa units will export CSV. Maple Systems OITs will interface via OPC (file format unknown as of yet). I'm corresponding with our WW guy in Lake Forest and hope to learn more next week from their engineers. Thanks again for the tips.
  18. NoHoCa

    Remote data logger/OIT for WW-SCADA application?

    Thanks danw2. We're familiar with Chessell, Honeywell declined, and Yokogawa may be equivalent to Chessell. It seems that any 3rd party device will output a CSV file which must then be imported to WW/InSQL via custom script. We were hoping to avoid scripting but perhaps that's just the nature...
  19. NoHoCa

    Remote data logger/OIT for WW-SCADA application?

    ...logger (in a NEMA 4 enclosure with the Modicon PLC) in order to store data during occasional communications outages. Proposed datalogger spec: * Solid state memory (no spinning hard drives). * Communicate via Modbus or Ethernet to PLC to monitor data registers. * Capability to push data...
  20. NoHoCa

    dP on air filter for centrif blowers?

    I'm trying to characterize the system curve for an existing wastewater aeration system based on centrifugal multistage blowers installed in 1991. Specifically, I'm interested in the pressure drop across the inlet air filter. The blower is rated 125 HP and delivers about 1800 scfm drawn from...

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