Atlas Copco PowerMACS 4000, User Manual

Page: 139 / 668

Set Up and Maintenance
9836 3521 01 139
The Multiple identifier function can be monitored and controlled from the PowerMACS PLC using its
Multiple identifier variables.
Multiple identifiers are defined in two steps using Identifier types and Result variables .
Identifier types
An Identifier type is a string supplied by an identifier Source , that is, a device that supplies the identifier
data, and fulfills an optional match condition .
Any of the systems ID devices but the one configured for the Work piece identifier function can be used as
Source . In addition to the ID devices, the six PLC outputs PLCx_IDTYPE_STR (see chapter: Multiple
identifier variables) can be used. These make it possible to supply identification data from other device
types, for example fieldbus, API, etc.
It is not possible to use an id device or the six PLC outputs PLCx_IDTYPE_STR together with an
AudiXML device. If the station has an AudiXML device attatched, possible input sources for the identifier
types will instead consist of AudiXML identifier tags TNR, PRT, PI1, PI2, STC and WID.
The match condition is specified using the Length parameter and the combination of the Significant
position and Significant string parameters. For a string to match it must fulfill all the following rules:

If a Length is specified then the incoming string must have exactly Length characters to pass.
Leave empty to accept strings of any length.

If Significant position and Significant string are non-empty then the specified character position
are first picked out from the incoming string. These must then match the regular expression
specified by the significant string (see chapter: Conversion table for a description of regular
expressions). Leave empty to accept all strings regardless of their content.