Series 642
INSTALLATION
605593EC
Edition 2017-11-24
71/113
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.
Sensor modes 2, 3 and 4 are possible with 2 sensor hardware [642 . . - . . . Q - .
. . . ] only.
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
-
2 or 4
0
This command initiates ZERO.
Refer to «ZERO (setup step 4)» for correct zero procedure.
Unless otherwise specified all values in the table above are in decimal notification. Hexadecimal values
are indicated by the letter ‘h‘ (e.g. 31h)
