Detailed description
Original instructions
About us
Structure diagram
The following is a structure diagram of the STEP2 block:
Behavior of the output
Behavior of the output OUT:
If the deviation (DEV = PV - SP) is less than the lower threshold dev_ll, the configured output OUT is set to 1. If however the deviation increases again, the output OUT is only set to zero if it exceeds dev_hl.
NOTE: To ensure that the block functions without errors, the output OUT should not be inverted.
Operating mode
The STEP2 function block has 2 operating modes available according to the value of the MAN_AUTO parameter :
Operating mode
MAN_AUTO
Meaning
Automatic
1
The output OUT is calculated by the controller block itself.
Halt
0
The output OUT will be held at the last calculated value.