RS485

RS485

第一部分 伦茨LECOM协议 1 1.1

LECOM协议用于伦茨驱动控制器与主机间的数据交换,LECOM-A/B协议符合DIN66019,ISO1745及ANSIX3.28(2.5及A2,A4)标准,这些标准基本类似,均描述了通讯系统中数据传输部分的控制过程。

主机(master, host)通过以下三种方式与从机(slave)即伦茨驱动控制器通信: (1) (2) (3)

驱动控制器间的通讯采用ASCII码形式,ASCII码表如下:

1

2

3

4

5

6

7

8

9 HT

0 LF

B VT

C JFF

D CR GS ‘’ ‘=’

I SO RS ‘’ ‘>’

F SI US ‘’ ‘?’

伦茨LECOM协议

概述

RECEIVE(接收方式) SEND(发送方式) BROADCAST(广播方式)

0 NUL SOH STX ETX EOT ENQ 1 DLE 2 ‘ ’ 3 ‘0’ 4 ‘@’ 5 ‘P’ 6 ‘‘’ 7 ‘p’

DC1 ‘!’ ‘1’ ‘A’ ‘Q’ ‘a’ ‘q’

ACK BEL BS

DC2 DC3 DC4 NAK SYN ‘’’’ ‘2’ ‘B’ ‘R’ ‘b’ ‘r’

‘#’ ‘3’ ‘C’ ‘S’ ‘c’ ‘s’

‘$’ ‘4’ ‘D’ ‘T’ ‘d’ ‘t’

‘%’ ‘5’ ‘E’ ‘U’ ‘e’ ‘u’

‘&’ ‘6’ ‘F’ ‘V’ ‘f’ ‘v’

ETB CAN EM SUB ESC FS ‘’’ ‘7’ ‘G’ ‘W’ ‘g’ ‘w’

‘(’ ‘8’ ‘H’ ‘X’ ‘h’ ‘x’

‘)’ ‘9’ ‘I’ ‘Y’ ‘i’ ‘y’

‘’ ‘:’ ‘J’ ‘Z’ ‘j’ ‘z’

‘’ ‘;’ ‘K’ ‘[’ ‘k’ ‘{’

‘’ ‘<’ ‘L’ ‘\’ ‘l’

‘M’ ‘N’ ‘O’ ‘]’ ‘m’

‘^’ ‘n’ ‘~’

‘_’ ‘o’

‘︱’ ‘}’

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