BATCH_ID System Tag

Units, connections, and segments (generally referred to as equipment) have batch identification system tags that are created when equipment is defined in the Model Editor. The batch identification system tags are as follows:

• <equipment name>.CAMPAIGN_ID

• <equipment name>.LOT_ID

• <equipment name>.BATCH_ID

When the Batch Manager allocates equipment to batches, it also updates these tags to reflect the batch to which the equipment is allocated. One element of this 3-part batch identifier, the BATCH_ID, is assumed to be a unique identifier for a batch. Therefore, for alarms to be associated with a batch, each unit, connection and segment must have a corresponding Foxboro DCS compound or block in the Foxboro DCS control system, and the BATCH_ID system tag of the equipment must be linked to the corresponding Compound:LOOPID parameter of the equipment.

By default, the Foxboro DCS Tag Linker links the BATCH_ID system tag to the Compound:UNIT.SN0010 parameter of the equipment. Sequence Block code in the Compound:PHASE_EXEC Block of the equipment assigns the value of Batch_ID system tag, stored in SN0010, to the Compound:LOOPID parameter of the equipment.

Units must have a corresponding compound in the Foxboro DCS control system of the same name. Connections and segments should have a corresponding compound of the same name; however, sometimes this is not practical and a data block can be used. In this situation, the connection or segment BATCH_ID system tag must be linked to the LOOPID parameter of the data block. When an alarm occurs in the data block, the alarm contains the LOOPID parameter value of the Data Block. The alarm is sent to alarm destinations configured in the compound of the data block.