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Sending data:
The “reception done” flag, the “transmission done” flag, and the F159 (MTRN) instruction are
related as follows:
- Header (STX) and terminator (ETX) are automatically added to the data being transmitted. The data is
transmitted to an external device.
- When the F159 (MTRN) instruction is executed, the “transmission done” flag R9039 goes off.
- Duplex transmission is disabled while F159 (MTRN) is being executed. The “transmission done” flag
R9039 must be observed.
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