Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 904

Precautions
• Note that the MTR instruction directly operates the actual input/output. Even when the command of the MTR instruction
turns off, the output that has been turned on by the MTR instruction is not turned off. Turn off the output specified by (d1) in
the program.
• The MTR instruction execution interval should be longer than the total response time of the input and output modules. If the
MTR instruction execution interval is shorter than the above time, inputs cannot be read normally. If the scan time in the
program is short, select the constant scan and set longer scan time than the total of the response time.
Operation error
Error code Description
(SD0)
2820H A device other than the input (X) is specified by (s).
A device other than the output (Y) is specified by (d1).
7 APPLICATION INSTRUCTIONS
902
7.18 Matrix Input Instruction