5-77
Chapter 5.  DETAILED DESCRIPTION OF EACH FUNCTION
Polarity of output assignment
The polarity of four output assignments (A, B, C, D) used for the output bit 
function can be set.
Item (Bank) Display Contents Initial value User level
Control output 1 Polarity A 
to D (DO Assignment bank)
The digits are called 1st digit, 2nd digit, 3rd 
digit, and 4th digit from the right end.
 
1st digit:  Output assignment A Polarity setting
  2nd digit:  Output assignment B Polarity setting
  3rd digit:  Output assignment C Polarity setting
  4th digit:  Output assignment D Polarity setting
0: Direct
1: Reverse
0000 High function
Control output 2 Polarity A 
to D (DO Assignment bank)
0000
Event output 1 Polarity A 
to D (DO Assignment bank)
0000
Event output 2 Polarity A 
to D (DO Assignment bank)
0000
Event output 3 Polarity A 
to D (DO Assignment bank)
0000
•  When the object control output is the relay output or voltage pulse output, and 
the operation type of the DO Assignment is set for output bit functions 1 to 4, the 
display and setting can be made.
•  When the object event output is provided and the operation type of the DO 
Assignment is set for output bit functions 1 to 4, the display and setting can be 
made.
  Handling Precautions
The output relay may be turned ON and OFF repeatedly at a high-speed 
depending on the conditions. 
To avoid such faulty operation, always strictly observe the following 
cautions:
Control output 1: When any of [Output assignment A, B, C, D] (
Ot
1.2
 to 
Ot
1.5
) is set at [49: Control output 1 status], do not set [1: Reverse] for 
the same symbol of [Output assignment A, B, C, D Polarity]. 
Event output 1: When any of [Output assignment A, B, C, D] (
Ev
1.2
 to 
Ev
1.5
) is set at [48: Event output 1 status], do not set [1: Reverse] for 
the same symbol of [Output assignment A, B, C, D Polarity].