Panasonic FP7 Series Command Reference Manual page 1087

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Timing chart
Master communication
clear to send flag
(X90 - X9F)
Master communication
sending flag
(Y90 - Y9F)
Execute SEND
Master communication
sent flag
(Y70 - Y7F)
Sending data
Response reception
processing
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I/O allocations
I/O number
Master communication
X90 to X9F
clear to send flag
Master communication
Y90 to Y9F
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) The above I/O numbers are those for the connections 1 to 16.
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Precautions for programming
● Use the UNITSEL instruction immediately before the SEND/RECV instruction to specify a
target connection number for communication.
● Confirm the "master communication clear to send flag" of a corresponding connection is ON,
and execute the SEND/RECV instruction. The master communication clear to send flag will
not turn ON until the connection to the partner is established. It is recommended to specify to
enable the auto open function in the connection setting of ET-LAN. Also, the connections can
be connected with OPEN instruction.
● The SEND or RECV instruction cannot be executed for the connection for which the master
communication is in progress. Confirm that the "master communication sending flag" is OFF,
and execute the instructions.
● The SEND or RECV instruction cannot be executed for the connection for which the slave
communication is in progress. (such as performing a data request from a host computer).
● Up to 16 instructions can be executed simultaneously for different COM ports and
connections. (The total of simultaneous usage of SEND, RECV, pGPSEND, GPTRNS, and
pPMSET instructions.)
WUME-FP7CPUPGR-12
Check that
the flag is ON
Check that the
flag is OFF
Name
Turns ON when a connection is established in the master
communication.
Turns ON during sending data based on the SEND/RECV
instruction.
Turns OFF when the ED instruction is executed after the
completion of the response receive processing.
Reports completion result of sending data in genera-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
17.39 SEND (MC Protocol Master)
SEND instruction executable
conditions
Clear to send flag (X90 - X9F): ON
Sending flag (Y90 - Y9F): OFF
Sending flag (Y90 - Y9F):
While sending: ON
ED instruction executed following
response reception processing: OFF
Sent flag (Y70 - Y7F):
Normal completion: OFF
Abnormal completion: ON
Description
17-199