High−level Instructions
3 − 358
In this example, the control data beginning with DT10 (depth 3 → 6 words) should be specified as shown
below. To send the 5 words of data → DT10 = H0005
CPU1 Route 1
0
CPU2 No.2
CPU2 Route 3
1
CPU3 No.4
CPU3 Route 1
2
CPU4 No.16
CPU4 Route 2
3
CPU5 No.10
: Depth
DT11=H8103
DT12=H0203
DT13=H0401
DT14=H1002
DT15=H0A00
Precautions during programming
It is not possible to execute multiple F145 (SEND) instructions and F146 (RECV) instructions at the same
time.
The program should be set up so that these instructions are executed when the MEWNET send/receive
execution enabled flag (R9030) is on.
R9030 0: Execution inhibited (F145 (SEND)/F146 (RECV) instruction being executed)
1: Execution enabled
The F145 (SEND) instruction only requests that the data be sent, but the actual processing takes place when
the ED instruction is executed. The MEWNET send/receive completed flag (R9031) can be used to check
whether or not the transmission has been completed.
R9031 0: Completed normally
1: Completed with error (The error code is stored in DT9039.)
DT9039
(DT90039)
If the transmission has been completed with an error (R9031 is on), the contents of the error (error
code) are stored.
For information on the contents of error codes, refer to the manual for that particular link unit. If the error code
is H71 to H73, a communication time−out error has occurred. The time −out time can be changed within a
range of 10.0 ms to 81.9 seconds (in units of 10 ms), using the setting of system register 32. The default value
is set to 10 seconds for FP2/FP2SH/FP10SH.
Error code (HEX) Description
H71 Time out: Waiting for transmission answer
H72 Time−out: Waiting for transmission buffer to be emptied
H73 Time−out: Waiting for response
If there is any CPU other than the FP2SH and FP10SH connected to the network, global transmission
(sending data using the HFF specification for the unit No.) should never be used.
The F145 (SEND) instruction cannot be executed if the target is a special internal relay (from R9000) or a
special data register (from DT9000/DT90000).
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