Installation, Operating & Maintenance Instructions
Series 650 DN 100-
250 (I.D. 4“ - 10”), DeviceNet
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
266341ED
2012-07-13
55/79
Command
(DeviceNet
®
term
if deviant)
Service Code
Class ID
Instance ID
Attribute ID
Service
data length
(number of bytes)
Service
data field
SENSOR MODE
Set
16
49
1
101
1
X
Get
14
49
1
101
1
X:
0
no sensor
1
1 sensor operation (sensor 1 input)
2
2 sensor operation with automatic changeover
(low range = sensor 2 input, high range = sensor 1 input)
3
1 sensor operation (sensor 2 input)
4
2 sensor operation with automatic changeover
(low range = sensor 1 input, high range = sensor 2 input)
This command controls / returns the sensor mode for pressure control.
Note:
Sensor modes 2, 3 and 4 are possible with 2 sensor hardware [650 . . - . . .
Q
- . . . . ]
only.
Note:
For applications where the high range sensor is used for for monitoring purpose only,
select sensor operation modes 1 or 3 for pressure control with low range sensor and read
high range sensor from SENSOR 1 READING resp. SENSOR 2 READING.
SENSOR RATIO
Set
16
49
1
103
2 or 4
X
Get
14
49
1
103
2 or 4
X:
sensor ratio according to selected DATA TYPE, range is
100
…
10’000
This command defines the sensor ratio for 2 sensor operation.
Sensor ratio = high range sensor full scale / low range sensor full scale * 100.
ZERO CONTROL
Set
16
49
1
102
1
X
Get
14
49
1
102
1
X:
0
Disable
1
Enable
This command enables resp. disables the ZERO command. In case it is disabled ZERO does
not work.
ZERO
75
49
1
This command initiates ZERO.
Note:
Refer to «ZERO (setup step 4)» for correct zero procedure.
Note:
Unless otherwise specified all values in the table above are in decimal notification. Hexadecimal values are indicated
by the letter „h„ (e.g. 31h)
