MagnaTran 7.1 User’s Manual
Command Reference
MN-003-1600-00
Map
Brooks Automation
Revision 2.2
8-45
Description
This command is used to assign an internal reference name, type or use, and if
required a characteristic to physical I/O. Referring to the I/O by its reference name
automatically references the I/O by its type, therefore defining the nature of the ref-
erence.
For I/O types defined as active high:
•
Setting that I/O to the ACTIVE state will cause the signal to go HI.
•
Setting that I/O to the INACTIVE state will cause the signal to go LOW.
•
Reading that I/O when the signal is HI will cause an ACTIVE response
•
Reading that I/O when the signal is LOW will cause an INACTIVE response.
For I/O types defined as active low:
•
Setting that I/O to the ACTIVE state will cause the signal to go LOW.
•
Setting that I/O to the INACTIVE state will cause the signal to go HI.
•
Reading that I/O when the signal is LOW will cause an ACTIVE response
•
Reading that I/O when the signal is HI will cause an INACTIVE response.
NOTE:
The actual terms used by the I/O instead of “ACTIVE” and “INACTIVE” are
defined by the I/O type and are specified in the descriptions that reference the I/O.
For example, OPEN or NOT_OPEN; RETRACTED or NOT_RETRACTED.
The I/O types are defined as performing specific functions with the settings and
responses defined by those functions.
NOTE:
When defining the NUMERIC I/O type, the I/O channels being specified
must be consecutive and the low order channel must be the least significant
bit.
It is possible to define a specific I/O channel using multiple MAP commands where
the function of that I/O is defined differently in the different MAP commands. This
allows an I/O channel to be referenced in different ways depending upon the func-
tion being performed.
For example; it may be convenient to identify the Wafer Sensors as both
