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Installation, Operating & Maintenance Instructions
Series 615 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
289111EB
2013-02-05
58/96
Inquiry function
Command
Acknowledgement
(within 10ms after reception of command)
Description
SENSOR 1 READING
Get
[i:64][CR][LF]
[i:64][sxxxxxxx][CR][LF]
data length 8 characters
s
sign, 0 for positive readings, - for negative readings
xxxxxxx
sensor 1 reading, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for details
This function returns direct reading from sensor 1 input.
SENSOR 2 READING
Get
[i:65][CR][LF]
[i:65][sxxxxxxx][CR][LF]
data length 8 characters
s
sign, 0 for positive readings, - for negative readings
xxxxxxx
sensor 2 reading, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for details
This function returns direct reading from sensor 2 input.
PRESSURE CONTROL
STATUS
Get
[i:36][CR][LF]
[i:36][abcdefgh][CR][LF]
data length 8 characters
a
0
= no pressure control (e.g. if position control is selected)
1
= wide range control (PD control)
2
= close up control (PID control)
cdefgh
reserved, do not use
The controller distinguishes 2 control ranges and acts accordingly.
DEVICE STATUS
Get
[i:30][CR][LF]
[i:30][abcdefgh][CR][LF]
data length 8 characters
a
0
= local operation,
1
= remote operation,
2
= locked remote operation
b
0
= Initialization (Refer to chapter: «Behavior during power up»
1
= synchronization,
2
= POSITION CONTROL,
3
= CLOSED
4
= OPEN,
5
= PRESSURE CONTROL,
6
= HOLD ,
7
= LEARN
8
= INTERLOCK (OPEN by digital input)
9
= INTERLOCK (CLOSED by digital input)
C
= power failure,
D
= safety mode
E
= fatal error (read «FATAL ERROR STATUS» for details)
c
0
= Power Failure Option (PFO) disabled
1
= Power Failure Option (PFO) enabled
d
0
= no warning,
1
= warning present
(read «WARNINGS» and «ERROR STATUS» for details)
efg
reserved, do not use
h
0
= normal operation,
1
= simulation running
This function returns status information about the valve.
Note:
In simulation mode the valve can demonstrate pressure control capability
independent of other equipment such as vacuum chamber, flow controller and gauge.
Normal operation is not possible when simulation is running.