S.B.C. Elettronica S.p.A. - Engineering Division
HPDxxN – High Power User’s Manual
55
copies digital input 3 into bit y of parameter Pb40 (second operand=0) or Pb70 (second
operand=1). If the second operand is added to value 2, before the input is copied it will be inverted.
If a FIN instruction is included at any other position in the program it will have no effect. FIN
instructions can be enabled/disabled for each FIN: 1st FIN enabled if b94.5=0; 2nd FIN enabled if
b94.6=0; 3rd FIN enabled if b94.7=0.
A FIN instruction in the PLC program after the first three instructions or after any other type of
instruction will always be ignored.
There are two timers Pr92 and Pr93 at the disposal of the user. To use the first timer simply load
the time in terms of number of samplings (6.144 mS) in parameter Pr92: for example Pr92=100 is
equivalent to 614 milliseconds. Pr92 automatically decreases through time, bit b99.0 remains on zero
until the timer interval has elapsed; when Pr92=0 then b99.0=1. The same functionality applies to the
second timer regarding parameter Pr93 and bit b99.1. Ensure that Pr92 Pr93 b99.0 and b99.1 are
refreshed only after the first pico-PLC program scan.
The maximum number of instructions is 64 including the END instruction. Note that mathematical
operations occupy the space of two logical operations so when they are used the maximum number
of instructions available is decreased accordingly.
The PLC program must always be terminated with an END instruction.
The pico-PLC program can be edited on a PC (see
Programming with Pcbrush)
or directly
from the keypad. In this latter case, to facilitate procedures, when you need to delete an instruction,
select it and then press [M] to display the type of instruction; now keep [M] pressed and
simultaneously press [-]; when both keys are released the instruction will be deleted. On the
contrary, in order to add an instruction after In06 for example, select the next instruction In07, press
[M] to display the type of instruction; now keep [M] pressed and press [+] simultaneously; when
both keys are released an FIN instruction will be inserted. In this latter procedure make sure that the
instructions in the program are no more than the maximum number or you will lose the last one(s).
The pico-PLC program can be edited or altered only when the PLC is in stop status (b99.13=0).
