10
RESET
999999
SV2
SV1
0
OUT2
OUT1
RESET
999999
SV2
SV1
0
OUT2
OUT1
RESET
999999
SV1
SV2
0
OUT2
OUT1
Output
mode
setting
Input mode
Up/Down A, B, C
S
T
D
Save the data before power off
:
When
is set, the current PV will be saved. When
is displayed, the PV will be cleared.
Pre-scale function
:
When conducting unit conversion, PV = PV x PreScale value, ranging from 0.001 to
99.999.
RS-485 Communication
1.
Wring Terminals:
Terminal 9: RS-485+, Terminal 14: RS-485-
2.
Serial Data Format: Supported transmission speed: 2,400, 4,800, 9,600, 19,200, 38,400bps; Not supported formats:
7,N,1 or 8,O,2 or 8,E,2
3.
Communication Protocol: Supported Modbus ASCII/RTU mode; Function codes: 03H register read and 06H single
register write; Function code 03H can read maximum 8 words at a time
ASCII Mode
Register Read (03H)
Response
Register Write (06H)
Response
Start character
’
：
’
Start character
’
：
’
Start character
’
：
’
Start character
’
：
’
‘0’ ‘0’ ‘0’ ‘0’
Address
‘1’
Address
‘1’
Address
‘1’
Address
‘1’
‘0’ ‘0’ ‘0’ ‘0’
Function code
‘3’
Function code
‘3’
Function code
‘6’
Function code
‘6’
‘1’ ‘0’ ‘1’ ‘1’
‘0’
Data length (byte)
‘4’ ‘0’ ‘0’
‘0’ ‘0’ ‘0’ ‘0’
Start address of read
data
‘0’ ‘1’
Data address
‘1’
Data address
‘1’
‘0’ ‘F’ ‘0’ ‘0’
‘0’
Address
1000H
Data content
‘4’ ‘3’ ‘3’
‘0’ ‘0’ ‘E’ ‘E’
Word length
‘2’ ‘0’
Data content
‘8’
Data content
‘8’
LRC Checksum
‘E’
Address 1001H
Data content
‘0’ LRC
Checksum ‘F’ LRC
Checksum ‘F’
VARITEL INGENIERIA ELECTRONICA S.A.
[email protected] - www.varitel.com - Tel. (54) 11-4243-1171 / Fax: (54) 11-4292-7545
Manuel Baliña 456, Lomas de Zamora (B1832CCJ) Buenos Aires, Argentina.
