Panasonic AFP7CPS4E User Manual page 101

 Timing chart
 Data in the table [S] specified by GPSEND instruction are sent, in ascending order from
lower bytes.
 During the sending process, the "General-purpose communication Sending active flag" (Y8,
Y9, YA, YB) turns ON. The flag is turned OFF when sending is completed. (The flag does
not turn off right after the execution of the instruction. It turns off at the beginning of the
second scan.)
 The sending result (0: normal completion, 1: abnormal completion) is saved in the general-
purpose communication sending result flag (Y0, Y1, Y2, Y3).
General purpose
communication Clear to
send flag (X8, X9, XA, XB)
General-purpose
communication Sending
active flag (Y8, Y9, YA, YB)
Execute GPSEND
Sending done result
flag (Y0, Y1, Y2, Y3)
Sending data
 I/O allocation (CPU Unit)
COM port no.
1 2 0
X8 X9 XA
Y8 Y9 YA
Y0 Y1 Y2
 I/O allocation (For Serial Communication Unit)
COM port no.
1 2 3
X8 X9 XA
Y8 Y9 YA
Y0 Y1 Y2
(Note 1) Each contact is used for reading the operation status. Do not write over it with a user program.
(Note 2) When the sending time is shorter than the scan time, the "General-purpose communication Sending active
flag" (Y8, Y9, YA) turns OFF when the GPSEND instruction is executed in the subsequent scan following data
sending completion. In all cases, it is turned ON for at least one scan time.
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Confirm ON
Confirm OFF
Name
General-purpose
communication Clear to
send flag
General-purpose
communication
Sending active flag
Sending done result
flag
Name
4
General-purpose
XB communication
Clear to send flag
General-purpose
YB communication
Sending active flag
Sending done result
Y3
flag
Conditions to enable execution of
GPSEND instruction
Clear to send flag (X8, X9, XA, XB): ON
Sending active flag (Y8, Y9, YA, YB): OFF
Sending active flag (Y8, Y9, YA, YB):
Sending data: ON, Sending done: OFF
Sending done result flag (Y0, Y1, Y2, Y3):
Normal completion: OFF
Abnormal completion: ON
Explanation
Turns ON when the unit is set to the general-purpose
communication mode.
Turns ON during sending data based on general-purpose
communication GPSEND.
Turns OFF when the sending process is completed.
Reports completion result of sending data in general-purpose
communication or master communication. (Normal
completion: 0, Abnormal completion: 1)
Explanation
Turns ON when the unit is set to the general-purpose
communication mode.
Turns ON during sending data based on general-purpose
communication GPSEND.
Turns OFF when the sending process is completed.
Reports completion result of sending data in genera-purpose
communication or master communication.
(Normal completion: 0, Abnormal completion: 1)
9.3 Sending Operation
9-5