Question: A contractor wants me to sign a Partial Release form on a job he hasn’t paid me for yet. Doesn’t that put me at risk of not collecting the money if I’m not really paid after I sign the release form? – Greg Storn

Answer: The good news here is that there is an easy solution to this issue. There are four different legal documents that apply to contracted work: 4. Unconditional Release Upon Final Payment

The only “condition” of a Conditional Release is that the release is valid only if the money specified on the release is paid to the contractor. In other words, if you are 50% complete with a $10,000 job, you can safely sign a Conditional Release Upon Progress Payment for $5,000. If you aren’t paid the $5,000, the release is not valid and you have not given up any of your lien rights to this money.

On the other hand, if you sign and Unconditional Release, you have just given up your rights to whatever amount of money that was on the Unconditional Release from. So the rule is, don’t sigh an Unconditional Release from until the money you are releasing is in your bank account. I’m not talking about a check in your hand, either. I’m saying that you should never sign an unconditional release until that check has cleared and the funds are literally in your bank account.

Some or my company’s corporate clients always ask for a release before they will pay an invoice. No problem, we just send them a Conditional Release Upon Progress Payment or a Conditional Release Upon Final Payment. Later, after their check has cleared into our bank account, we will (if they ask) follow up with an Unconditional Release.

By the way, Conditional Release forms protect both the client and the contractor. If a client gets a Conditional Release form a contractor, they know that they are protected from getting a lien from that contractor, but only if they actually pay the contractor the money specified on the lien.

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A Programmable Logic Controller (PLC) receives information from one or more inputs. This semiconductor control device processes the information based on a software program. Finally, it sends an output control signal. The microprocessor based control system performs functions such as timing, logic, sequencing and others. The PLC follows instructions from an operator-defined program.

These intelligent systems provide reliable, high-speed monitoring and control of processes in automated applications. In addition, they are easy to program and configure.

Once the program updates the output, the CPU starts over and the cycle repeats again. The cycle depends on the number of inputs, outputs, and size of the program, while the action will depend on the inputs coming from a variety of sensors.

The input sensors include components such as switches, proximity sensors, photoelectric sensors, pressure switches, level switches, encoders and temperature sensors, while the output devices include actuators, relays, switches, and many more.

PLCs rely on software programs that help them in making the necessary decisions. The PLCs are programmed through a variety of tools, which may differ in ease of use, appearance, and complexity. The most commonly used PLC programming language is Ladder Logic, a graphical software that uses common electrical symbols. Other languages include Function Block Diagram (FBD), Sequential Function Chart (SFC) and Structured Text (ST).

The programming is done on the device such as a computer or handheld device after which it is transferred to the PLC memory using a communication interface.

Selecting a suitable PLC that will address your current and future needs can be a challenge, especially with the large number of different PLCs on the market today. The available PLCs have varying capabilities, physical sizes, complexity, cost, power requirements, scalability and other parameters. Therefore, it is necessary to determine the correct programmable logic controller for your specific application. Special systems can be designed for use in harsh environments.

The Programmable Logic Controller has revolutionized and simplified controls in automation and industrial applications. PLCs are easy to install, wire, program and modify to suit changing application requirements. These control systems are usually available in a wide range of sizes that ensure finding exactly what you need for any application.