Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 539)

9 Application Instructions API 150-199
DVP-PLC Application Manual 9-67
API Mnemonic Operands Function
186 MBRD P
Read Matrix Bit
Controllers
ES/EX/SS SA/SX/SC EH/SV
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
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
S: Matrix source device n: Array length D: Pointer (Pr), for storing the value of target location
Explanations:
1. Range of n: K1 ~ K256
2. S designates KnX, KnY, KnM and KnS; D designates KnY, KnM and KnS.
3. SA/SX/SC can designate n = 4. EH/EH2/SV can designate n 4 ≦ .
4. See the specifications of each model for their range of use.
5. Flags: M1089 ~ M1095. See remarks for more details.
6. When this instruction is executed, it first determines if the matrix pointer clear flag (M1094) is “On”. If it is “On”,
pointer D is cleared as 0. The instruction then reads the On/Off status from the 0
th
bit of S to the matrix
rotation/displacement/output carry flag (M1095). Whenever finishing reading 1 bit, the instruction determines
whether the matrix pointer increasing flag (M1093) is “On”. If it is “On”, the value of pointer D will plus 1. When
the reading is processed to the last bit, the matrix search end flag (M1089) will turn “On” and pointer D record
the No. of read bits.
7. The Pointer (Pr) of the matrix is designated by the user in the instruction. The vaild range of Pr is 0 ~ 16n -1,
corresponding to b
0
~ b
16n-1
in the matrix. If the Pr value exceeds its range, M1092 will be On and the instruction
will not be executed.
Program Example:
1. When X0 goes from Off to On, M1094 will be set to “0” and M1093 to “1”. Therefore, the Pr will plus 1 after
every reading.
2. Set the Pr value D20 = 45. When X0 goes from Off to On for 3 times, we can obtain the 3 execution results n,
o, p.
n D20 = 46, M1095 = 0, M1089 = 0.
o D20 = 47, M1095 = 1, M1089 = 0.
p D20 = 47, M1095 = 1, M1089 = 1.
X0
MBRDP D0 D20 K3