Siemens Acvatix SAS Series Basic Documentation page 41

Communication
properties
Siemens
Smart Infrastructure
·
Backup
513,
mode
514, 515
·
·
Restarting
256 Restarting is possible by:
·
the device
·
à Device re-initializes and sets all process values to defaults.
Reset
The actuator supports the following re-initialization / reset behaviour:
·
·
Effect of reset:
Process values: set to ex-works default values.
·
·
Self test
256 When triggered, the self test drives the actuator to the detected limits and sets
the flags in register 769 according to the result (bit 09 = 1à"failed" or bit 10 = 1
à "passed").
The self test is not passed when the limits were not reached from the lower
end (results in jam). If the Min/Max limits can be exceeded, the self test is not
evaluated as failed.
Communication
Communications protocol
Actuators SAS.., SAT.. for valves
Functions and control
o Min / Max (depends on Min/Max settings)
o Stop
In case the communication to the controller is lost, the device can be
configured to go into a defined state.
Default setting mode is "keep last setpoint", i.e. in case of communication
loss, the device controls to the last received setpoint.
If the backup mode is enabled, it can be configured as follows:
o go to a predefined backup position
o keep current position
Power-reset (turning operating voltage off and on) or
by "ReInitDevice" command.
Local reset by push-button
Remote reset: Using "RemoteFactoryReset" command.
Parameters:
o Application and actuator parameters are set to factory defaults,
o Network parameters are reset only in case of local reset, not by remote
reset (otherwise loss of communication).
Not reset are: Counters, status flags, device info, and factory data.
Modbus RTU
Number of nodes
Address range
Transmission formats
Baud rates (kBaud)
Bus termination
RS-485, not galvanically separated
Max. 32
1...247 / 255
Factory settings: 255
1-8-E-1 / 1-8-O-1 / 1-8-N-1 / 1-8-N-2
Factory settings: 1-8-E-1
Auto / 9,6 / 19,2 / 38,4 / 57,6 / 76,8 / 115,2
Factory settings: Auto
120 Ω electronically switchable
Factory settings: Off
41 / 60
CE1P4041en
2019-04-09