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314
Hardware
This instruction inputs up to 64 signals from an 8 x 8 matrix using 8 input points
and 8 output points. Any 8 x 8 matrix can be used. The inputs must be connected
through a DC Input Unit with 8 or more points and the outputs must be connected
through a Transistor Output Unit with 8 or more points. The basic wiring and tim-
ing diagrams for MTR(––) are shown below.
Wiring
8th row
7th row
1st row
ID 211 I/O Unit
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A0
A1
A2
A3
A4
A5
A6
A7
A8
Timing Diagram
Matrix select signal
Matrix status
Bits indicating
input status
One-round Flag (bit
08 of output word)
Each round completed in 24 executions
00
01
02
03
04
05
06
07
00
32
64
00
32
64
06
Precautions
The 64 keys can be divided into 8 rows (including a row for OW bit 08) which are
scanned consecutively. Since each row is scanned for 3 cycles, a delay of up to
25 cycles can occur before a given row of keys is scanned for inputs.
I/O refreshing must be performed for all I/O points used by MTR(––) each time it
is executed to ensure effective operation. The I/O REFRESH instruction must
thus be used with MTR(––) whenever MTR(––) is used in a subroutine to ensure
that the I/O points are refreshed each execution.
MTR(––) will be executed from the first cycle whenever program execution is
started, including restarts made after power interruptions.
SR 25403, which is turned on while MTR(––) is being executed, is reset in an
interlocked program section and MTR(––) is not executed in an interlocked pro-
gram section.
Do not use MTR(––) more than once in the program.
MTR(––) cannot be used for I/O Units mounted to Slave Racks.
Advanced I/O Instructions
Section 5-28
Содержание SYSMAC C200HS
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Страница 2: ...C200HS Programmable Controllers Operation Manual Revised February 2002...
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Страница 379: ...371 SR word Corresponding key s Bit 279 03 04 05 3 06 07 VER 08 09 Monitoring Operation and Modifying Data Section 7 1...
Страница 470: ...468 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage...
Страница 471: ...469 Programmer Program Date Page TC address T or C Set value Notes TC address T or C Set value Notes Timers and Counters...