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10.4. Configuring periodic variables
This window is used to configure the IO Scanning function, described in the IO Scanning
Service section on page 72.
Example:
•The periodic variables of the drive at IP address 192.168.1.12 are associated with PLC
data words.
•The drive periodic output variables (control) are associated with the 32 words (WR
count) starting at PLC address %MW550 (Write Ref.).
•The drive periodic input variables (monitoring) are associated with the 32 words (RD
count) starting at PLC address %MW500 (Read Ref.).
The addresses for the PLC %MW words correspond to the configuration in the previous example.
PLC
address
Periodic output variable
(default assignment)
Configurable
%MW 550 Reserved No
%MW 551 Scanner write word 1 Yes (c001)
%MW 552 Scanner write word 2 Yes (c002)
%MW 553 Scanner write word 3 Yes (c003)
%MW 554 Scanner write word 4 Yes (c004)
%MW 555 Scanner write word 5 Yes (c005)
%MW 556 Scanner write word 6 Yes (c006)
%MW 557
to
%MW 581
Reserved No
PLC
address
Periodic output variable
(default assignment)
Configurable
%MW 500 Reserved No
%MW 501 Scanner read word 1 Yes (c021)
%MW 502 Scanner read word 2 Yes (c022)
%MW 503 Scanner read word 3 Yes (c023)
%MW 504 Scanner read word 4 Yes (c024)
%MW 505 Scanner read word 5 Yes (c025)
%MW 506 Scanner read word 6 Yes (c026)
%MW 507
to
%MW 531
Reserved No