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MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6
6 - 14
6.5.2 Fixed buffer communication program example (with the procedure exist control method)
This section explains the programming method in order to communicate data
(procedure exist control method) with an external device using the fixed buffers.
(1) Execution environment for the program example
(a) Send program (FX3U-1st station)
1) Connection No. 1 is used for fixed buffer sending.
2) The unit number specified in the sequence program and
FX Configurator-EN is 0.
3) The communication parameter settings are assumed to have been set as
described in Subsection 5.6.1, "Active open processing/close
processing".
(see the table below)
4) Fixed buffer No. 1 send data
: Stored in D1000 to D1031
5) Fixed buffer No. 1 send instruction complete device
: M201
6) Fixed buffer No. 1 send instruction abnormal complete device
: M202
7) Fixed buffer No. 1 send instruction complete status
: D101
[Operational settings]
[Open settings]
Setting name Settings in FX Configurator-EN Settings in the program
Communication data code setting Binary code BFM#24 b1:OFF
Initial timing
Do not wait for OPEN
(Communications impossible at STOP time)
BFM#24 b8:OFF
Local station IP address 10.97.85.222 (0A.61.55.DE
H) BFM#106 to 108
Send frame setting Ethernet (V2.0) BFM#24 b5:OFF
TCP Existence confirmation setting Use the Ping BFM#24 b4:OFF
Setting name Settings in FX Configurator-EN (No.1) Settings in the program
protocol TCP BFM#32 b8:OFF
Open system Active BFM#32 b14,b15:00
Fixed buffer Sending BFM#32 b0:OFF
Fixed buffer communication Procedure exist BFM#32 b9:OFF
Paring open No pairs BFM#32 b7:OFF
Existence confirmation No confirm BFM#32 b1:OFF
Local station Port No.[Decimal]
4096 BFM#40
Destination IP address 10.97.85.223 (0A.61.55.DF
H) BFM#41,42
Destination Port No.[Decimal] 8192 BFM#43
FX3U-1st station
FX
3U-2nd station