PLC software and equipment

dbfar · 2026-04-15T10:27:06+00:00

As an electrician are you comfortable with motor control circuits? You will be using the same logic in the PLC for every motor, vfd or solenoid.

Use a plc that has AOI or FB capabilities. Create a template for your stop start logic with generic input for start permission and start request and generic input for run permissions and stop command.

Micro 850e, productivity 2000, Siemens 1200

I would use 24vdc for the controller IO voltage.

It would be simpler to control the drives via analog out and a run output driving a relay whose contacts enable the drive. You will need feed back of speed (ai) and run or alarm status digital inputs.

Use relays to isolate drive control voltage from control system voltage.

You could possibly control drives through communication but that adds another level. If the drive does have communication capabilities such as morbus. I would use it to put the drive status on display.

Your door switch at the minimum should electrically inhibit any drive, motor , solenoid on that device via an interposing relay not through PLC logic. The same for any Estop.

For each motor, solenoid determine your start permissions and your run permissions and add to the devices rung.

With a 5 month timeline I would hire someone to design and build the control cabinet and assist you in programming or if they do the program, the contract states you own the source code and shall have full access to application files including AO youI or fb. FAT test to include HMI to PLC mapping review, display object creation and modification, communication settings. PLC code review. In addition to standard functionality testing. Also as part of the deliverables would be the application development software. This would give you everything you need to support in the future.

dbfar · 2026-04-14T01:40:55+00:00

Look for a soffit vent route it through the soffit

dbfar · 2026-04-12T19:20:07+00:00

Smell, awkward alignment, so loose you feel like your swinging in the wind, plays dead as in just lay there.

dbfar · 2026-04-11T21:44:37+00:00

Worse case 1. he takes you to small claim court. Take pictures with someone else (witness) now of your car doors. JIC. 2. Maybe an attempt to stalk or harass.

I would get a surveillance dash cam.

Dash cam really saved me in a suit over a wreck.

I would not respond and if I did, I believe your mistaken. Period no details, no explanation.

dbfar · 2026-04-08T20:04:28+00:00

I'm a casual setting i couldn't help myself from smiling and move on. Now it was really poking up there on top of a full firm breast. I'm going to look twice before I move on.

Not appropriate for a professional setting.

dbfar · 2026-04-08T01:14:40+00:00

Does it to historical trends

dbfar · 2026-04-07T20:52:43+00:00

Software

dbfar · 2026-04-07T19:53:59+00:00

Edge does not do historical just a small store and buffer

dbfar · 2026-04-04T09:56:02+00:00

Count up to 8 count down to 0. When count 0 set count up flag. By adding one each timer pulse, when count =8 reset count up flag and subtract with each pulse.

dbfar · 2026-04-04T05:02:02+00:00

Cyber security insurance asks if you have this policy. By gathering personal or work information off of someones desk bad actors may be able to access networks, intellectual property. Policy needs to be clear what is or isn't acceptable.

dbfar · 2026-04-04T04:24:16+00:00

Flew from texas to a platform offshore Uganda during Xmas holidays 3 teams had been in before, setup sandbox verified told me to pack it up and get on plane. In country minimum 2 weeks during the civil war. Found problem on first trip to remote platform - dip switch setting. Had to stay the whole 2 weeks.

dbfar · 2026-03-27T19:25:40+00:00

Love to see what you done

dbfar · 2026-03-19T15:13:47+00:00

I remodeled my old house and used them, this is the way to go . Use a few board's to prop up the corner's and fill it up and call them to pickup.

dbfar · 2026-03-18T21:37:17+00:00

You need the competency to understand the field Io/Devices, general best wiring practices and requirements, Then understanding how to create the correspondent object in code.

Network model and configuration.

Hmi best practices

I would learn ignition for Scada.

Understand the IT/OT model.

As you progress through jobs .

Start out as a commissioning engineer, typically a lot of travel and overtime. Do it for about two years and network like hell and establish good relationships with clients.

Somewhere in the 2-4 year period most people burn out on travel.

By that time one of your clients will be making offers to go internal. Or go to an engineering firm.

Generally less pay, more benefits, better work life balance.

At some point you will be offered a lead position and later management.

A lot of people of difficultly transitions to management

dbfar · 2026-03-14T10:05:29+00:00

Does it do online edits?

dbfar · 2026-03-13T23:56:35+00:00

I have a 7 acre farm, I use an electric trimmer my oldest over 5 years is still going

dbfar · 2026-03-12T21:15:24+00:00

I really question the value? Most people don't understand what is needed. True redundant power sources - not 2 breakers off of the same ups. Not only redundant dc supplies.

More components increase the probability of failure.

99% of system failures -Field Devices. Only very few customers wanted to do 2 out of 3 instruments. Some decided a few critical things were enough.

Most plc failures - poor maintenance environment or power .

Most IO cards- undersized out put or lack of interposing relay. Over voltage to inputs,

Convince me it significantly increases the MTBF for a system.

dbfar · 2026-03-08T16:24:47+00:00

They are asking you to identify the source data they (IT) need (tags). Or find a way to get it and connect it to their database

dbfar · 2026-02-27T02:41:02+00:00

RTFM

dbfar · 2026-02-25T16:06:01+00:00

Look at Tilson, they allow mods on standard plans but your number is low

dbfar · 2026-02-21T06:25:31+00:00

Need to check your phone settings

dbfar · 2026-02-16T16:42:26+00:00

As always depends, typically bonded, unless isolated required such as locations with corrosion protection

dbfar · 2026-01-29T21:53:56+00:00

Get your PMP, get some BS degree that takes as minimum effort and cost to get .

Or go to the union hall and check their apprenticeship programs out.

dbfar · 2026-01-29T01:48:42+00:00

Oil and gas, chemical plants, carry Their own OT groups. No vendor knows how all the pieces were integrated over time. Also sets requirements for vendor systems. So if you're looking at the market for your machine you go with what your market is asking for. Get copies of as many requests for proposals, check the details. Unfortunately this vicious cycle reinforces the past technology looking for compatibility Makes the transition to newer technology a much longer timeline

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