Requirement for particular archive value

A requirement for a particular value from an archive block can be defined by similar way as the requirement for the instantaneous value of object in D2000 System. The format of DDE reference is:

= D_2000|info!blname_N

D_2000 - DDE Server name (required).

info - type of information about an archive object. There can be these acceptable values:

• ARCH_VALUE – value of archive object
• ARCH_TIME – value time
• ARCH_STATUS – status of archive object
• ARCH_FLAGS - value flag

blname_N is a string consisting of:

• blname - logical name of archive block (COM_ID)
• N – consecutive number of archive value within the archive block.