Programmable Logic Controller

Programmable Logic Controller

As the nerves and brain of several applications in the industrial world, I-O modules and PLC must always operate at excellent levels to maintain high-performance levels in a production facility. We have the expertise to reliably refurbish input-output modules (I-O or I/O) and programmable logic controls (PLC) at Grammar Electrical so that these critical components function as they ought to.


The highly experienced and skilled technicians that perform I/O and PLC repair work are backed by engineers that design programs to fully exercise the functions and memory of each I/O module or PLC. They are tested to ensure that the equipment has been restored to its proper working condition. Parts which are identified as defective during visual inspection and static testing are replaced, as well as components identified as possibly unreliable due to age or indications from our extensive repair historical database.


We use dedicated testing equipment that has been designed to run the input-output modules through their paces, whether the module is an analog output, analog input, digital output, digital input, ASCII, communication, or other special function module. I/O modules and PLCs are tested thoroughly using our exclusive ATEIII test system which exercises the functions of the module or/ and using a mock-up of an actual PLC system. Plus, we also stock a large volume of quality reconditioned surplus I/O and PLC products from the major producers including Siemens. These reproduced items can offer you a quick solution at competitive prices!


Our team of professionally trained technicians and engineers cover all of our needs regarding PLC repair and testing. These include (however, not limited to):

  • Operator Interface Development
  • Database development
  • Training
  • PLC program development
  • Generating operation documentation and CAD drawings


Rely on Grammar Electrical for your critical I/O module and PLC repairs. With a 1-year guarantee that includes any product we repair in addition to parts replaced, you can be sure of our repair quality.


To schedule a visit from Grammar Electrical’s expert PLC repair and servicing service, contact us or complete this service request form. You’ll be glad you did.

To schedule a visit from Grammar Electrical, contact us or complete this service request form. You’ll be glad you did.