<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/cp/onlinemanual/lt000190" xml:lang="en">
   <Header>
      <Title>Offsetting from finish date to start date</Title>
      <Keyword type="header" order="d1e159956">
         <Level1>Offsetting</Level1>
         <Level2>from finish date to start date</Level2>
      </Keyword>
      <Keyword type="header" order="d1e159961">
         <Level1>From finish date to start date</Level1>
         <Level2>offsetting</Level2>
      </Keyword>
      <Keyword type="header" order="d1e159966">
         <Level1>Enterprise Planning</Level1>
         <Level2>planning</Level2>
      </Keyword>
      <Keyword type="header" order="d1e159971">
         <Level1>Planning</Level1>
         <Level2>enterprise planning</Level2>
      </Keyword>
   </Header>
   <GeneralSection>
      <Paragraph>Offsetting from the finish date to the start date, depends on
		the order type. Offsetting differs for production orders, purchase orders, and
		distribution orders.</Paragraph>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Offsetting production orders</SectionTitle>
      <List>
         <ListIntro>These factors determine how a production order is
		  planned/offset:</ListIntro>
         <ListItemHead>Routing planning</ListItemHead>
         <ListItem>If the estimated start date of the production order is <Emphasis>before</Emphasis> the date in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.fltm" role="manual">Start of Fixed Lead-Time Horizon (SFC)</GUIRef> field of the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session, you deal with short term planning. Therefore,
		  production orders are planned in a detailed way. The production order is
		  planned with routing, routing operations and quantity. The order lead time is
		  the sum of the operation lead times.</ListItem>
         <ListItemHead>
            <GUIRef href="" role="manual">Fixed order lead time</GUIRef>
         </ListItemHead>
         <ListItem>
            <Paragraph>If the estimated start date of the production order is <Emphasis>after</Emphasis> the date in the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#cprpd100.fltm" role="manual">Start of Fixed Lead-Time Horizon (SFC)</GUIRef> field of the <GUIRef href="/baanerp/cp/rpd/cprpd1100m000" role="session">Items - Planning (cprpd1100m000)</GUIRef> session, you deal with long term planning. Therefore,
			 production orders are planned in a less detailed way (to gain performance). If
			 the estimated start date falls after the date in the <GUIRef href="" role="manual">Start of Fixed Lead-time Horizon (SFC)</GUIRef> field, details are skipped. Instead, the fixed
			 order lead time is used to plan, without using routing and
			 operations.</Paragraph>
            <Paragraph>The estimated start date is determined by planning backwards
			 the fixed <GUIRef href="/baanerp/cp/rpd/cprpd1100m000#tiipd.oltm" role="manual">Order Lead Time</GUIRef> that is defined in the <GUIRef href="/baanerp/ti/ipd/tiipd0101m000" role="session">Items - Production (tiipd0101m000)</GUIRef> session.</Paragraph>
         </ListItem>
         <ListItemHead>Generic items</ListItemHead>
         <ListItem>Sometimes, the production order involves a generic item. The
		  generic routing has a set of possible operations. The choice of operations
		  depends on the configuration, so in a planned order, for a generic not yet
		  configured demand, all operations are planned. This offsetting differs from
		  normal items.</ListItem>
      </List>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Routing planning</SectionTitle>
      <Paragraph>A production order includes a series of operations. The sequence
		of operations is managed by the routing. One item can have multiple routes,
		with various sets of operations, depending on order quantity.</Paragraph>
      <Paragraph>In addition, you can model phantom items, which result in a
		network of parallel operations. The impact of phantom items on planning is
		described later.</Paragraph>
      <List>
         <ListIntro>One planned operation includes these lead time
		  components:</ListIntro>
         <ListItem>
            <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.mvrd" role="manual">Queue (Next Operation)</GUIRef>
         </ListItem>
         <ListItem>
            <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#e.average.setup.t" role="manual">Average Setup</GUIRef>
         </ListItem>
         <ListItem>Production run time, based on cycle time</ListItem>
         <ListItem>
            <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.wttm" role="manual">Wait</GUIRef>
         </ListItem>
         <ListItem>
            <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.mvtm" role="manual">Move</GUIRef>
         </ListItem>
      </List>
      <Paragraph>Production time can be either quantity dependent or fixed, which
		is determined by the <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.fdur" role="manual">Fixed Duration</GUIRef> check box.</Paragraph>
      <List>
         <ListIntro>These options are available:</ListIntro>
         <ListItem>Normal, no fixed duration ( <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.fdur" role="manual">Fixed Duration</GUIRef> check box is cleared)</ListItem>
      </List>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Production time = cycle time * order quantity / routing quantity</Paragraph>
      </Formula>
      <List>
         <ListItem>Fixed duration ( <GUIRef href="/baanerp/cp/rrp/cprrp2100m000#cprrp200.fdur" role="manual">Fixed Duration</GUIRef> check box is selected)</ListItem>
      </List>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Production time = cycle time</Paragraph>
      </Formula>
      <Paragraph>If you use the detailed routing information, the offsetting of
		two operations is as follows:</Paragraph>
      <Figure space-and-orientation="indented-estimated">
         <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" width="980" height="220"
                   SRC="../images/tr_graph_lt_po_offset_operations.png"
                   alt="[...]"/>
         <FigCaption>Production orders, offset operations</FigCaption>
      </Figure>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Operation overlap</SectionTitle>
      <Paragraph>The previous figure shows how you can plan two operations
		sequentially. Operation 20 starts when operation 10 is finished. If you use a
		transfer batch quantity or percentage, operation 20 can start when operation 10
		is partly finished.</Paragraph>
      <Figure space-and-orientation="indented-estimated">
         <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" width="841" height="274"
                   SRC="../images/tr_graph_lt_po_operations_overlap.png"
                   alt="[...]"/>
         <FigCaption>Production orders, operation overlap</FigCaption>
      </Figure>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Network of phantom operations</SectionTitle>
      <Paragraph>If item A has phantom items B and C as components, the
		production order contains the operations of item A, as well as of items B and
		C. If, for example, phantom B is required on the third operation of item A, and
		C is required on the second operation, the planning is as follows:</Paragraph>
      <Figure space-and-orientation="indented-estimated">
         <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" width="850" height="306"
                   SRC="../images/tr_graph_lt_po_network_of_operations.png"
                   alt="[...]"/>
         <FigCaption>Production orders, network of operations</FigCaption>
      </Figure>
   </GeneralSection>
   <GeneralSection>
      <SectionTitle>Capacity</SectionTitle>
      <Paragraph>The required capacity for a production order is derived from the
		operation lead times. Occupation factors indicate how many men or machines are
		involved in the operation. Only the setup time and the production time require
		capacity.</Paragraph>
      <List>
         <ListIntro>For the two types of production times, the capacity
		  calculations are as follows:</ListIntro>
         <ListItem>Normal, no fixed duration:</ListItem>
      </List>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Man hours = average set up * man occupation for set up + cycle time * order quantity  * man occupation for production / routing quantity</Paragraph>
      </Formula>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Machine hours = average set up * machine occupation + cycle time * order quantity  * machine occupation / routing quantity</Paragraph>
      </Formula>
      <List>
         <ListItem>Fixed duration:</ListItem>
      </List>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Man hours = average set up * man occupation for set up + cycle time  * man occupation for production / routing quantity</Paragraph>
      </Formula>
      <Formula space-and-orientation="indented-estimated">
         <Paragraph>Machine hours = average set up * machine occupation + cycle time * machine occupation / routing quantity</Paragraph>
      </Formula>
      <Paragraph>In the <GUIRef href="/baanerp/cp" role="package">Enterprise Planning</GUIRef> resource plans, either man or machine capacity is stored
		based on the <GUIRef href="/baanerp/ti/rou/tirou0101m000#tirou001.ccap" role="manual">Critical Capacity for Planning</GUIRef> field in the <GUIRef href="/baanerp/ti/rou/tirou0101m000" role="session">Work Centers (tirou0101m000)</GUIRef> session.</Paragraph>
   </GeneralSection>
   <RelatedTopics>
      <SectionTitle>Related topics</SectionTitle>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000034" role="manual">Calendars in Enterprise Planning</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000023" role="manual">Horizons and time fences</Link>
      </RelTopic>
      <RelTopic>
         <Link href="/baanerp/cp/onlinemanual/000407" role="manual">Time Zones in Enterprise Planning</Link>
      </RelTopic>
   </RelatedTopics>
</ManualTopic>