Precautions On Sending Data - Panasonic FP7 Series User Manual

9.3 Sending Operation
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I/O allocation (in the case of CPU with built-in ET-LAN)
I/O number Name
General-purpose
X80 to X8F communication clear to
send flag
General-purpose
Y80 to Y8F communication sending
flag
Y70 to Y7F Sent flag
(Note 1) Each contact is used for reading the operation state. Do not write over it with a user program.
(Note 2) In the case of the GPTRNS and pGPSEND instructions, the sending flag and send results flag are
updated after the scan is complete.
(Note 3) In the case of the GPSEND instruction, the sending flag and send results flag are updated after
sending is completed when the next GPSEND instruction is executed.
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Flag operations
Name
SR7
SR8
(ER)

9.3.4 Precautions on Sending Data

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Procedures when the end code is not added in the sending process
When you do not wish to add the terminator (end code) in the sending process, use a negative
value for specifying the No. of sent bytes.
9-16
Description
To be set in the case of out-of-range in indirect access (index modification).
The connection specified with UNITSEL is closed (other than "Connect").
The communication mode of the communication port specified with UNITSEL is not
"General-purpose communication."
When the data device specified by [S] exceeds the area
When the number of sent data specified by [n] is 0. The volume including a start code and
an end code exceeds the specified maximum value.
When the number of sent data specified by [n] exceeds the data area
Either 0 or a negative value is set for [N] in the settings of sending to ET-LAN.
Set when executed in an interrupt program.
Description
Turns ON when general-purpose communication is in a connected
status.
Turns ON when sending with general-purpose communication.
Reports completion result of sending data in genera-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
WUME-FP7COM-07