Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 237)

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MELSEC-Q

9 DEDICATED INSTRUCTIONS

Error

(1) When a dedicated instruction is completed abnormally, the abnormal completion

signal, (D)+1, turns on and the error code is stored in the transmission result

(S1)+1.

In case of operation errors, the error flag (SM0) turns on and the error code is

stored in the SD0.

See one of the following manuals according to the error code, and check and

correct the error.

4FFF

or less : QCPU(Q Mode) User's Manual

(Hardware Design, Maintenance and Inspection)

7000

or more: Section 10.2 of the User's Manual (Basic)

Program example

The following example shows a program that sends any data stored in D11 to D15

using the non procedure protocol.

When input/output signals of the Q series C24 are from X/Y00 to X/Y1F:

The transmission command is converted into pulse.

The transmission data stored in the designated device

is sent.

Designate the number of the interface (CH ) that will

send the data.

Designate the transmission data count in word units.

(Designate K10 when the unit is bytes.)

Clear the transmission result storage device to 0.

Transmission data is stored.

After the OUTPUT instruction is executed, the user

designated transmission complete signal (M0) turns

ON for one scan.

Storing the transmission data and writing the

transmission data count in the buffer memory, and

issuing a transmission request to the Q series C24

are all executed by the PLC CPU.

The completion flag is reset by an external instruction.

1 2 ... 232 233 234 235 236 237 238 239 240 241 242 ... 357 358

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 237