CHAPTER 13 RS-485 COMMUNICATIONS

 Sequence I/O signal read

CMND

DATA

(n)

50h

Sent from host controller

7

Memory type

Address (L)

Address (M)

Address (H)

Number of loaded

bytes

Dummy

02h

00h

00h

12h

0Ah

00h

7

Input signal

7

Output signal

0

0

CONT1

CONT2

CONT3

CONT4

CONT5

(Not used)

(Not used)

(Not used)

0

0

OUT1

OUT2

OUT3

(Not used)

(Not used)

(Not used)

(Not used)

(Not used)

Sent from servo amplifier

Memory type

Address (L)

Address (M)

Address (H)

Number of loaded

bytes

Dummy

STR1

STR2

Input signal

Dummy

Dummy

Dummy

Output signal

Dummy

Dummy

Dummy

7

0

02h

00h

00h

12h

0Ah

00h

Status data

See the figure on the left.

00h

00h

00h

See the figure on the left.

00h

00h

00h

13

PC Loader Communications 13-53