Panasonic FP Series

Data transfer via communication ports
759
Part III FP Instructions
"Transmission done" flag
When the specified number of bytes has been sent, the "transmission done" flag turns to TRUE. New data may
be sent or received. F159_MTRN (see page 741) turns the "transmission done" flag to FALSE. While
F159_MTRN is executed, no data can b
e received.
The "transmission done" flag can be evaluated using the IsTransmissionDone (see page 763) function. Or use
the system variable sys_b
IsComPort1TransmissionDone, sys_bIsComPort2TransmissionDone, or
sys_bIsToolPortTransmissionDone, depending on the port.
FP0:
Port
name
Port
number
Special
internal
relay
Function name System variable name Bit
status
COM 1 R9039 IsTransmissionDone
(see page 763)
sys_bIsComPort1TransmissionDone TRUE
FP0R:
Port
name
Port
number
Special
internal
relay
Function name System variable name Bit
status
TOOL 0 R903F sys_bIsToolPortTransmissionDone
COM1 1 R9039
IsTransmissionDone
(see page 763)
sys_bIsComPort1TransmissionDone
TRUE
FP, FP-X:
Port
name
Port
number
Special
internal
relay
Function name System variable name Bit
status
TOOL 0 R903F sys_bIsToolPortTransmissionDone
COM1 1 R9039 sys_bIsComPort1TransmissionDone
COM2 2 R9049
IsTransmissionDone
(see page 763)
sys_bIsComPort2TransmissionDone
TRUE
FP2/FP2SH/FP10SH:
Port
name
Port
number
Special
internal
relay
Function name System variable name Bit
status
COM 0 R9039 IsTransmissionDone
(see page 763)
sys_bIsComPort1TransmissionDone TRUE
MCU:
Port name Port numbert Input Function name Bit
status
COM1 16#xx01 X4
COM2 16#xx02 X5
IsTransmissionDone (see page 763) TRUE
xx = slot number (hexadecimal)
For detailed information on the MCU input (X) flags, see Getting in RUN Mode via the Input (X) Flags (see page
732).
xx = slot number (hexadecim
al)
Communication error flag
If the communication error flag turns to TRUE during reception, reception continues. Execute F159_MTRN (see
page 741) to turn the error flag to FALSE and to move the write pointer back to offset 1.
The commu
nication error flag can be evaluated using the IsCommunicationError function. Or use the system
variable sys_bIsComPort1CommunicationError, sys_bIsComPort2CommunicationError, or