Installation, Operating & Maintenance Instructions
Series 612 DN 40 (I.D. 1.5”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
289917EA
2011-07-07
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3.11.6 Command syntax
[function][value][CR][LF]
Each element is separated with square brackets for clarity. Square brackets are not part of command syntax. Unless
otherwise specified all elements are ASCII characters. There are no spaces between the elements necessary. Commands
and values are case sensitive.
Data length of value depends on command. Number of characters is specified in the description. Some commands do not
require the value element.
[CR] is Carriage Return (0D hexadecimal).
[LF] is Linefeed
3.11.7 Addressed communication
Applicable for addressed RS485 communication only. In case of RS485 Point-to-Point setup, addressing is not necessary.
Command
0 1 2 3 4 …
n+3
n+4
# a a a c c CR
LF
Description
code description
data
range
#
identification sign (ascii 35)
aaa
device address
000 - 999
c
command
refer to standard command set
Example
Description: Send “Close” command to valve with RS485 device address 015
Command:
#015C:[CR][LF]
Answer:
#015C:[CR][LF]
