Inovance H3U Series - Page 326

325
4
4 Instructions 4.12.4 Other Peripheral Instructions
MTR S D1 D2 n
Input matrix Applicable model:
H3U
S
Input operand
head address
Head address of eight consecutive input bit elements with
numbers whose lowest bit is 0, such as X0 and X10
16-bit
instruction (9
steps)
MTR:
Continuous
execution
D1
Output operand
head address
Head address of n (2 to 8) consecutive output bit elements
with numbers whose lowest bit is 0, such as Y0 and Y10
D2
Input status
storage head
address
Head address of elements that store the status of input bit
elements (the lowest bit of each storage element number
must be 0, such as Y0, M0, and S0)
n
Input column
count
Number of input matrix columns, that is, the number of Y
outputs to be scanned
◆
Operands
Operand
Bit Element Word Element
System·User System·User Bit Designation Indexed Address Constant
Real
Number
S X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
D1 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
D2 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
n X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
Note: The elements in gray background are supported.
◆
Function
This instruction is only applicable to PLCs of the transistor output type. Eight X ports and several Y ports
form an input matrix network to increase the number of input signal channels. This instruction typically uses
the ON contact M8000. Example:
M8000
〔MTR X30 Y30 M10 K2 〕
The following gure shows the wiring diagram.
The key status
is read and
stored in M10
Considering the 10-ms response delay of the X input lter, the output of Y30 and Y31 is interrupted every
20 ms to enable instant input/output processing.
The M8029 ag is set to ON after every automatic read operation is completed.
A maximum of 64 scan inputs can be acquired using eight X inputs and eight transistor Y outputs. However,
it takes 160 ms (= 20 ms x 8 columns) to read all inputs, which is impractical for high-speed input.
Therefore, ports after X20 are typically used for scan input.