19.1. Checking Key Switches
When a key switch is pressed, “0” in the corresponding position turns to “1”.
19.2. Checking Control Input/Output
When an input terminal is ON, “0” in the corresponding position turns to “1”.
When the NET/GROSS key or Function key is pressed, the corresponding pin No. of the control output B1 to
B6 turns ON.
19.3. Checking Standard Serial Output
When the ENTER key is pressed, “123” is sent. The communication specifications comply with the standard
serial output specifications.
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