Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4“ - 10”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email
www.vatvalve.com
271149EA
2007-06-12
45/77
3.11.8 Inquiry commands
Command
Acknowledgement
(within 10ms after reception of command)
Inquiry function
Description
Get
[i:76][CR][LF] [i:76][xxxxxxsyyyyyyyabc][CR][LF]
ASSEMBLY
data length 17 characters
xxxxxx
position, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for
details
s
sign, 0 for positive pressure readings, - for negative pressure readings
yyyyyyy
pressure, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for
details
a
0 = local operation, 1 = remote operation, 2 = locked remote operation
b
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 = no warning, 1 = warning present
(read «WARNINGS» and «ERROR STATUS» for details)
This function returns an assembly consisting of POSITION, PRESSURE and main status
information for the valve.
Get
[A:][CR][LF] [A:][xxxxxx][CR][LF]
POSITION
data length 6 characters
xxxxxx
position, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for
details
This function returns the current valve position.
Note: When motor interlock is active during power up the valve enters the ‘safety mode’
and is not able to recognize position. In this case position 999’999 is returned.
Get
[P:][CR][LF] [P:][sxxxxxxx][CR][LF]
PRESSURE
data length 8 characters
s
sign, 0 for positive readings, - for negative readings
xxxxxxx
pressure, return value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for
details
This function returns the actual pressure.
