<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/000002" xml:lang="en">
	<Header>
		<Title xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40">Workload control, a graphic example</Title>
		<Keyword><Level1>Workload control</Level1>
			<Level2>graphic example</Level2>
		</Keyword>
	</Header>
	<GeneralSection><Paragraph>The planning algorithm of the Work Load Control planning method can be illustrated by means of the graphics below. The planning method is described in detail in the <Link href="/baanerp/cp/onlinemanual/000001" role="manual">Workload control, planning algorithm</Link> topic.</Paragraph>
		<Paragraph>In these graphics the total production volume of a number of plan items is displayed.</Paragraph>
		<Note><SectionTitle>Note</SectionTitle>
			<Paragraph>This example shows the effect of capacity constraints. Material constraints are handled in exactly the same way.</Paragraph>
		</Note>
		<GeneralSection><SectionTitle>Step 1: Generate the non-constraint plan</SectionTitle>
			<Paragraph>When no constraints are considered, SSA ERP plans the production of each item exactly when it is needed. Generally, this non-constraint plan is not feasible, because of capacity or material constraints.</Paragraph>
			<Figure><HTML:IMG SRC="../images/nt_graph_000002a.GIF" height="252" width="468" xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40"/><FigCaption>Non-constraint plan</FigCaption>
				<FigLegend><LegendEntry><Symbol>A</Symbol>
						<Desc>Capacity Constraints</Desc>
					</LegendEntry>
				</FigLegend>
			</Figure>
		</GeneralSection>
		<GeneralSection><SectionTitle>Step 2: Backward planning</SectionTitle>
			<Paragraph>In week 24, 26 and 28 the required production capacity exceeds the available capacity. In a backward-planning step, part of the planned production is moved to earlier periods.</Paragraph>
			<Figure><HTML:IMG SRC="../images/nt_graph_000002b.GIF" height="252" width="468" xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40"/><FigCaption>Before backward planning</FigCaption>
				<FigLegend><LegendEntry><Symbol>A</Symbol>
						<Desc>Capacity constraints</Desc>
					</LegendEntry>
				</FigLegend>
			</Figure>
			<Figure><HTML:IMG SRC="../images/nt_graph_000002c.GIF" height="252" width="468" xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40"/><FigCaption>After backward planning</FigCaption>
				<FigLegend><LegendEntry><Symbol>A</Symbol>
						<Desc>Capacity constraints</Desc>
					</LegendEntry>
				</FigLegend>
			</Figure>
		</GeneralSection>
		<GeneralSection><SectionTitle>Step 3: Forward planning</SectionTitle>
			<Paragraph>The excess capacity requirements in the first period of the plan cannot be moved backward any further.</Paragraph>
			<Paragraph>As a result, the desired delivery dates cannot be met. The excess production volume is moved forward, to get a plan that resembles the non-constraint plan as much as possible.</Paragraph>
			<Figure><HTML:IMG SRC="../images/nt_graph_000002d.GIF" height="252" width="468" xmlns:ssa="http://www.ssaglobal.com" xmlns:HTML="http://www.w3.org/TR/REC-html40"/><FigCaption>After forward planning</FigCaption>
				<FigLegend><LegendEntry><Symbol>A</Symbol>
						<Desc>Capacity constraints</Desc>
					</LegendEntry>
				</FigLegend>
			</Figure>
		</GeneralSection>
	</GeneralSection>
	<RelatedTopics><SectionTitle>Related topics</SectionTitle>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000003" role="manual">Workload control</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000001" role="manual">Workload control, planning algorithm</Link>
		</RelTopic>
		<RelTopic><Link href="/baanerp/cp/onlinemanual/000005" role="manual">Workload control, a detailed example</Link>
		</RelTopic>
	</RelatedTopics>
</ManualTopic>
