Omron NT31 Operation Manuals page 574

Operation of the Memory Link
S Notify commands
These commands serve to notify the host of the results of operation at the
NT31/NT31C. Only these commands are issued by the NT31/NT31C and,
therefore, there is no response for them.
There are the following five commands.
- Touch switch input notify command
- Numerical input notify command
- Character string input notify command
- Direct area changing notify command
- PT memory changing notify command
S Operation mode switching command
This command switches the NT31/NT31C operation mode from RUN mode to
transmit mode. It is issued from the host and switches the NT31/NT31C opera-
tion mode.
- PT operation mode switching command
S Re-send command
This command lets the NT31/NT31C re--send a notify command. It is issued
from the host and the notify command issued last is re-sent from the
NT31/NT31C.
- Re-send request command
S Error response
This is a response from the host which is issued when the contents of command
transmitted to the NT31/NT31C was incorrect.
- Error response
Section 9-3
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