FATEK FBs-CB5 - Page 179

Advanced Function Instruction
7-15
FUN 40 D P
BITRD
BIT READ
FUN 40 D P
BITRD
S : Source data to be read
N : The bit number of the S data to be read out.
S, N may combine with V, Z, P0~P9 to serve
indirect address application
WX WY WM WS TMR CTR HR IR OR SR ROR DR K XRRange
Ope-
rand
WX0
∣
WX240
WY0
∣
WY240
WM0
∣
WM1896
WS0
∣
WS984
T0
∣
T255
C0
∣
C255
R0
∣
R3839
R3840
∣
R3903
R3904
∣
R3967
R3968
∣
R4167
R5000
∣
R8071
D0
∣
D4095
16/32-bit
+/- number
V、Z
P0~P9
S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
N ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 0～31 ○
z When read control "EN" = 1 or "EN↑" ( P instruction) changes from 0 to 1, take the Nth bit of the S data
out , and put it to the output bit "OTB".
z When read control "EN" = 0 or "EN↑" ( P instruction) is not change from 0 to 1, The output “OTB” can be
selected to keep at the last state( if M1919=0 ) or set to zero ( if M1919=1 ).
z When the operand is 16 bit, the effective range for N is 0~15. For 32 bit operand ( D instruction) it is 0~31.
N beyond this range will set the N value error flag "ERR" to 1, and do not carry out this instruction.
X0
S :
Y0
EN
40P.BITRD
N :
7
WX 0
OTB
ERR
z The instruction at left reads the 7th bit (X7) status from
WX0 (X0~X15) and output to Y0. The results are as
follows:
X15 X7 X0
S WX0 1 10011101001100 1
N＝7──────────
Ø
X0＝
Y0
1