Delta Electronics ASDA-B2 series User Manual

Chapter 8 MODBUS Communications ASDA-B2
8-8 Revision September 2013
11-bit character frame (For 8-bit character)
8N2
Start
bit
01
2
3456
Stop
bit
8-data bits
11-bits character frame
Stop
bit
7
8E1
Start
bit
01
2
3456
Stop
bit
8-data bits
11-bits character frame
7
Even
parity
8O1
Start
bit
01
2
3456
Stop
bit
8-data bits
11-bits character frame
7
Odd
parity
 Communication Protocol:
ASCII Mode:
Start Start character’: ’ (3AH)
Slave address Communication address: 1-byte consists of 2 ASCII codes
Function Function code: 1-byte consists of 2 ASCII codes
DATA(n-1)
Contents of data: n word = n x 2-byte consists of n x 4 ASCII codes,
n10
…….
DATA(0)
LRC LRC check sum: 1-byte consists of 2 ASCII codes
End 1 End code 1: (0DH)(CR)
End 0 End code 0: (0AH)(LF)
ASCII Mode: ’:’ character
ADR (Communication Address) consists of 2 ASCII codes and it ends in CR (Carriage Return) and
LF (Line Feed)
CR (Carriage Return) is represented by ASCII number 13, and LF (Line Feed) is represented by
ASCII number 10.
There are communication address, function code, contents of data, LRC (Longitudinal Redundancy
Check) between start and end characters.
VARITEL INGENIERIA ELECTRONICA S.A.
info@varitel.com - www.varitel.com - Tel. (54) 11-4243-1171 / Fax: (54) 11-4292-7545
Manuel Baliña 456, Lomas de Zamora (B1832CCJ) Buenos Aires, Argentina.

Delta Electronics ASDA-B2 series Specifications

General

Brand	Delta Electronics
Model	ASDA-B2 series
Category	Servo Drives
Language	English