Receiving Operation; Overview Of Receiving Operation - Panasonic AFP7CPS4E User Manual

9.4 Receiving Operation

9.4.1 Overview of Receiving Operation

 Instructions
In the general-purpose communication mode, data received from the partner device are saved
in eight reception buffers for each COM port. When the GPRECV instruction is executed in a
user program, data in the reception buffer can be copied into a given operation memory.
Reception buffer (eight for each COM port)
・・・・・・
・・・・・・
Operation
・・・・・・
memory
・・・・・・
DT200 U 5
DT201 H 32 31
DT202 H 34 33
H ・・・ 35
DT203
 Sample program
 When the reception done flag (X0) turns ON, the reception program is started up by the
GPRECV instruction.
 In the UNITSEL instruction, specify the slot No. (U0) and the COM. port No. (U1).
 In the GPRECV instruction, specify and execute the header of the data table where the
received message is saved (DT200) and the final address (DT209).
X0
（ ）
DF
R100
(Note) The unit number and COM port number in the above program is applied when the COM.1 port of the CPU unit
is used.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
PLC
H 31 32 33 34 35
・・・・・・・・
・・・・・・・・
・・・・・・・・
Transfer the strings received based on
GPRECV instruction to a given data register
UNITSEL
GPRECV ． US
Receive message/data
1 2 3 4 5(CR)
R100
U0 U1
S1 S2
DT200 DT209
S1 S2
9.4 Receiving Operation
External device
00001 2 1
00002 4 3
・・ 5
00003
・・・・・・ ・・・・・・・・
GPRECV execution conditions
Reception done flag: ON
Settings for communication port
S1: Slot 0 Built in CPU (U0)
S2: COM1 (U1)
GPRECV processing
S1: Header of
Received Data (DT200)
S2: Terminator of
Received Data (DT209)
9-9