Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 831

3. Instructions
Flags
Name
Error Flag
Function
MTR(213) outputs the selection signals to bits 00 to 07 of O, reads the data in order from bits 00 to 07
of I, and stores the 64 bits of data in the 4 words D through D+3. MTR(213) reads the status of the 64-
bit matrix every 24 CPU Unit cycles. The One Round Flag (bit 08 of O) is turned ON for one cycle in
every 24 cycles after each of the selection signals has been turned ON.
External Connections
Connect the hexadecimal keypad to Input Unit contacts 0 to 7 and Output Unit contacts 0 to 7, as
shown in the following diagram.
A8 A7 A6 A5 A4 A3 A2 A1 A0
B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
The inputs and outputs can be connected to the following kinds of Basic I/O Units and High-density I/O
Units as long as they are not mounted in a SYSMAC BUS Remote I/O Rack.
• DC Input Units with 8 or more input points
• Transistor Output Units with 8 or more output points
Timing Chart
00
01
02
03
04
05
06
07
00
:
32
:
64
00
:
32
:
64
08
One round completed in 24 cycles
794
Label
ER OFF
OD212
A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
Operation
8 th row
th
7 row
st
1 row
ID211 I/O Unit
Selection signals
Matrix status
Bits indicating status of inputs
(Bit ON when input is ON)
One Round Flag
CS/CJ/NSJ Series Instructions Reference Manual (W474)