hi

first i send entry code
1- send 04f ;op code for write the error counter
2-send 253 ;for add error counter
3- send 0fe ;for "bit mask" ???

then
i clear clock and set the i/o line
finally
i send 102 clock
*** but i/o line goes to 0
and then

send psc verify
1-byte:0b3h 2-byte:254
3- byte:psc code:0ffh
wait for i/o goes to high

send second psc byte
1-byte:0b3h 2-adbyte:255
3-byte: psc code : 0ffh
wait for i/o goes to high

thank you for all guied