
1.OVERVIEW OF PMC B-63983EN/02
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1.5.4 Multi-Path PMC Interface
The multi-path PMC interface is the communication means between
two PMC paths.
Generally, Each path of multi-path PMC system has individual PMC
memory space except E address. And, E address can be used to share
data of multi-path PMC system. However, this method has a risk that
the memory is over written by other PMC path inappropriately.
When using this function, the input and output signals of each path
become definitely. So, you can send or receive the data on between two
PMC paths safely.
When you output data to N address at one of PMC paths, it can be
referenced by M address in other PMC path.
Ex.) When using this function with 1st PMC and 2nd PMC :
1st PMC 2nd PMC
M
N
M
N
Moreover, signals of M address are synchronized during 1 scan of 2nd
level program. Therefore, you can reference the same signal status on
the first step and the last step of level2 program, like as X and F
address.
For details of setting for two PMC paths, see Subsection 2.4.3.