Mitsubishi Programmable Controllers FX-232ADP Manual de usuario descargar pdf (Pagina 114)

FX communication

RS instruction 9

9-12

4 ) Use interlink mode of control line

*1 While the counterpart equipment is ready to receive, turn ON the DR (DSR) signal.

While both the DR (DSR) signal and the send request are turned on, the FX

sends the data.

*2 In the interlink mode, the programmable controller turns OFF the ER (DTR) signal before the

30th character receive buffer limit, and requests the counterpart equipment to stop send.

After this send request, up to 30 characters can be received. The 31st and later characters

cannot be received. Stop send temporarily, then send the remaining data after the ER (DTR)

signal is turned ON again.

When send is stopped, receive is completed after the time-out evaluation time is expired.

When send is not stopped, receive is completed after the final character of the send data is

received or the 30th character is received. Therefore, receive points need to set 30th or more.

*3 Reset using a sequence program.

If it is turned ON, the next data cannot be received.

In the interlink mode, make sure to set the number of receive points to 30 characters or more.

Reset it using a program.

When it is not trurned off,

the next data cannot be

received.

Data 2

RS instruction

driving

Send data

SD (TXD)

OFF ON

Data 4

OFFON

Send request

M8122

Receive

completion

M8123

Data 4

Data 1 Data 3

Receive data

RD (RXD)

OFF ON

*1 *1 *1

Data 3

Time-out

evaluation time

D8129

10ms

OFF ON ON ON

Reset using a program.

When it is not trurned off, the

next data cannot be received.

OFFON

DR(DSR)

Time-out

evaluation

flag M8129

Up to 30 characfers can be

received *2

ER(DTR)

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 161 162

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Mitsubishi Programmable Controllers FX-232ADP Manual de usuario Pagina 114

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