Plex Production Scheduling Checklist (Free)

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10 critical items still open - these are the highest-risk gaps.

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Master data

Routings list operations in the real sequence used on the floorCRITICALCycle times and setup times reflect recent actuals, not original estimatesCRITICALEvery operation is assigned to the correct workcenterBills of material match current engineering revisionsCRITICALScrap or yield factors are set where history justifies themAlternate workcenters are defined where parts can run on more than oneInactive parts and routings are cleaned up

Capacity and calendars

Shift patterns and holidays are loaded for the planning horizonCRITICALWorkcenter capacity reflects available people, not only machinesCRITICALPlanned maintenance is scheduled so it blocks capacityBottleneck workcenters are identified and reviewed weeklyOvertime rules are agreed and documentedTooling or fixture constraints are captured where they limit scheduling

Job and order readiness

Jobs have due dates tied to customer or internal demandCRITICALPriorities are agreed and visible to the floorCRITICALJobs are checked for material availability before releaseCRITICALSpecial instructions and drawings are attachedOutside processing lead times are includedSplits and partial quantities have a clear ruleRework and scrap replacement jobs follow a defined process

Material and supply

Shortage list is reviewed before the schedule is publishedCRITICALPurchase order dates match the schedule need datesKitting or staging is timed to the start of each jobCustomer supplied material is tracked separatelyLot and serial requirements are known before start

Daily and weekly routine

Schedule is reviewed with supervisors at the start of each shiftCRITICALLate and at-risk jobs are reviewed every dayReported quantities and times are checked for completenessUnplanned downtime is logged with reasonsSchedule changes follow a rule and are communicatedWeekly review compares planned versus actual hours by workcenterSchedule adherence is measured and discussed

Count completed items against total. Resolve all critical items first: if any critical item is open, treat the schedule as unreliable until fixed. Items depend on your Plex configuration and modules; skip those that do not apply and note why.

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How to use the checklist

Walk through each group with the scheduler, a supervisor and a Plex administrator. Tick what is true today, not what is planned. Critical items are the ones that most often explain a schedule nobody trusts. Export the completed list to PDF, assign an owner to each open item and review it monthly.

Tick only what is true today
Fix critical items first
Assign an owner and date to each gap
Repeat monthly or after major changes

Why scheduling fails

Most scheduling problems trace back to optimistic cycle times, missing capacity constraints and jobs released without material. The software then produces a precise schedule built on inaccurate inputs. Floor teams learn to ignore it, and planners maintain a private spreadsheet. Fixing inputs is cheaper than any new tool.

Measuring improvement

Choose a few measures and track them weekly: schedule adherence, on-time job completion, planned versus actual hours at the bottleneck, and the number of jobs released with shortages. If adherence is low, compare the routing times to actual reported times and update the biggest gaps first. Small corrections on high volume parts have outsized effect.

Common mistakes

Teams often schedule to nameplate machine capacity and forget operators, setups and maintenance. Others release everything early to keep machines busy, creating work in process that hides priorities. Changing the schedule without telling the floor is another common failure. Agree rules for changes and publish them.

Frequently Asked Questions

Does this checklist depend on a specific Plex module?

It is written generally for scheduling in a Plex environment. Modules and screens differ by subscription and configuration, so skip items that do not apply and add items specific to your setup.

How often should we review cycle times?

At least quarterly for high volume parts, and whenever reported actuals diverge noticeably from routing times. Start with the parts that consume the most hours at your bottleneck.

What is the first thing to fix?

Usually routings and cycle times for the top parts by hours, followed by capacity calendars. Wrong inputs here make every other improvement less effective.

Can I use it for other MES systems?

Mostly yes. The groups of master data, capacity, readiness, material and routines apply to any finite or infinite capacity scheduling environment.

If you want scheduling data from Plex and other systems queried in plain language with the query visible, Netray can discuss a private read-only setup.

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Plex Production Scheduling Checklist