Bronkhorst Multibus - Manual (Page 25)

BRONKHORST ®
Page 25 Operational instructions for digital multibus instruments 9.17.023
5.11 V
ALVE SAFE STATE
Unsigned char 0…255 RW N 301 115/31
The controller module will go to a safe state in the following situations:
• If bus communication is lost and control mode = 0 (DeviceNet and PROFIBUS only)
• if initreset = 73
• if control mode = 22 (new safe state control mode)
In fail safe state the green LED will be blinking (0.1 s on, 2 sec off).
The valve will react to the fail safe state according to the table below.
Decimal value Description
0 Deactivate valve (0mA)
1 Activate valve (max current)
2 Close valve
3 Open valve
4 Hold valve in current position
5 Hold valve at safe value
If Initreset = 73 the fail safe state mode will always be “hold valve in current position”
“Hold valve at safe value” can only be used with DeviceNet instruments.