Bronkhorst DeviceNet slave interface - Manual (Page 26)

BRONKHORST ®
Page 26 DeviceNet interface 9.17.026
4.4.2 Override
The Override attribute is implemented as follows:
Override Value to Valve
0 (Normal) set by attribute 6 (Actuator Value)
1 (Close) 0
2 (Open) max. value
3 (Hold) last used value
4 (Safe state) See section 4.4.3.
4.4.3 Safe state
In the following table the implemented values of the Valve output are shown. Mapping Safe state:
Safe state Value to Valve
0 (zero/off) 0
1 (full scale / on) max. value
2 (hold last value) last used value
3 (use safe value) Safe value (obj 0x32, attr 0x16)
4.5 G AS CALIBRATION OBJECT INSTANCE
4.5.1 Gas standard number
The retrieval of the gas standard number is implemented as follows: the first 2 characters of the fluid name are
interpreted as a decimal number. This number is returned as the gas standard number.
4.5.2 Gas Symbol
The fluid name is returned as the Gas Symbol.
4.6 N ETWORK ERROR DETECTION
When a network error is detected while the device is in Executing state, it is set back to the Idle or Critical Fault state.
In those states the valve is set to the Safe state (see attribute Safe State in Analog Actuator object). When the device
detects that no bus power is available, the network is closed and no communication is started until the bus power is
detected again.
Such errors are shown by the LED’s on the instrument. See the chapter “Troubleshooting”