Delta DVP-ES2 - Manual (Page 531)

3 . I n s t r u c t i o n S e t
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API Mnemonic Operands Function
186 MBRD P Matrix bit read
Controllers
ES2/EX2 SS2 SA2
SE
SX2
Bit Devices Word devices Program Steps Type
OP X Y M S K H KnX KnY KnM KnS T C D E F
S * * * * * * *
n * * *
D * * * * * * * *
MBRD, MBRDP: 7 steps
PULSE 16-bit 32-bit
ES2/EX2 SS2
SA2
SE
SX2 ES2/EX2 SS2
SA2
SE
SX2 ES2/EX2 SS2
SA2
SE
SX2
Operands:
S: Matrix source device n: Matrix length (K1~K256). D: Pointer Pr (bit number)
Explanations:
1. MBRD instruction reads the bit status of the matrix. When MBRD executes, the status of
M1094 (Matrix pointer clear flag) will be checked first. If M1094 = ON, Pr value in D will be
cleared and the instruction reads from the first bit. The bit status is read out and mapped to
M1095 (Carry flag for matrix operation). After a bit is read, MBRD checks the status of
M1093 (Matrix pointer increasing flag). If M1093 = ON, MBRD instruction will proceed to read
the next bit, i.e. Pr value plus 1. When MBRD proceeds to the last bit, M1089 = ON,
indicating the end of the Matrix, and D records the last bit number. After this, MBRD
instruction stops.
2. The Pointer (Pr) of the matrix is designated by the user in the instruction. The valid range of
Pr is 0 ~ 16n -1, corresponding to b0 ~ b16n-1 in the matrix. If the Pr value exceeds the valid
range, M1092 = ON and the instruction will be disabled.
3. If operands S or D use KnX, KnY, KnM, KnS format, only n = 4 is applicable.
Program Example:
1. When X0 goes from OFF→ON with M1094 = ON (Clear Pr value) and M1093 = ON (Increase
Pr value), the reading will start from the first bit and Pr value increases 1 after a bit is read.
2. Assume present value of pointer D20 = 45, the following 3 results ( n, o, p) can be obtained
when X0 is executed from OFF→ON for 3 times.
n D20 = 45, M1095 = OFF, M1089 = OFF
o D20 = 46, M1095 = ON (bit status is ON), M1089 = OFF.
p D20 = 47, M1095 = OFF, M1089 = ON. (reading proceeds to the last bit)
X0
MBRDP D0 D20 K3