Modify Input/Output

1. It begins with a “%” character
2. Followed by the type of I/O.

   I: input, Q: Output

3. Followed by the size of I/O. 

   X: Boolean (1 bit), B: byte (8 bits), W: word (16 bits), D: double word (32 bits), L: long word (64 bits)

4. Followed by its address on the selected bus. 

   The address has the following format: “deviceId.slaveId.moduleId.bitOffset”, where deviceId, slaveId, moduleId and bitOffset are integers ranging from 0 to 65535.

   • 
     

   • • set deviceId to 0
     • set slaveId to the id of the I/O node
     • set moduleId to the id of the slice
       
     • bitOffset must always be 0 for non-Boolean I/Os

• 
  

• The size of the variable and the I/O must be the same.
  

Example:

%IX0.1.2.4 is an input Boolean located on deviceId=0, slaveId=1, moduleId=2 at bitOffset=4

%QB0.1.2.0 is an output byte located on deviceId=0, slaveId=1, moduleId=2