Maple Systems MAPware-7000 - Manual (Page 23)

15 MAPware-7000 Ladder Logic Guide
1010-1041 rev. 00
Instruction 2- NC Contact
Expression:
Space Requirement: 1 line x 1 column Location Requirement: Left rail, Middle
Function:
NC (normally closed) contact of device A.
When the input is ON and the device A is OFF, the output is turned ON.
Execution Condition:
Input Operation Output
OFF Regardless of the state of device A OFF
ON When device A is OFF. ON
When device A is ON. OFF
Operand:
Coil or Bit Register Constant Index
Name X Y B S T. C. M
X
W Y
W B
W S
W
T C D I J K
M
W
A Device √ √ √ √ √ √
Example:
Timing Diagram:
Coil Y0022 comes on when the device X0000 and B0001 are both OFF.