Yaskawa i80M Connecting Manual User Manual

Page 57

NC output control codes

– DC4 to start and stop the machine, but the machine can not out-

put control codes to control the NC.

However, when the machine under control is unable to

process data in time, it can control the CS signals of the NC to halt the data outputting of the
NC.

When CS signals of the NC are not used, short CS and RS as shown below.

Table 14.4

C Interface Connecting Cable (B)

Frame grounding

SD Sending data

Receiving data

Sending data

C s

Capable of sending

Data set ready

Signal grounding

Data terminal ready

E R

AI. ARM )

●

Description of signals

FG : Safety grounding

SD: Transmission data (output)

RD: Received data (input)

START

STOP

RS Request for sending (output) -When sending data, NC is turned on when starting transmis-

sion, and turned off when transmission ends.

CS For sending (input) -When this input signal is on, NC can send data. If the machine under

control is unable to process data in time, it can turn off this signal to interrupt the transmis-

sion

of data from NC within 2 characters.

shown in Table 14.4.

SG Signal grounding.

ER Data terminal ready-Use this signal as a

When this signal is not used, connect lines as

tape rewinding signal if a tape reader is con-

nected

Among

to an

interface. The tape reader can be rewound if this signal is ON,

NOTE

interface signals, the following are normally not used by the NC,

DR Data set ready
ER Data terminal ready

CD Data receiving carrier detection

However, when “1” is set for parameter
lock is added,

CHKDR ( # 6021 D4), a DR (data set ready) inter-