Campinas, 09/14/18 - LNLS/CNPEM Version 1.0 Tested with Moxa NPort device (RS232 to Ethernet port conversor)
Author: Allan S. B. Bugyi (allan.bugyi@lnls.br)
To establish communication with N-Helix you first need to run the following command: 'caput OXCS_NHELIX:DISABLE 0' This will also enable sending commands to N-Helix. To disable communication and sending commands just change value '0' in above command to '1'.
PVs Variable name PV name TEMP - OXCS_NHELIX:TEMP GAS SET POINT - OXCS_NHELIX:SETPOINT SHIELD TEMP - OXCS_NHELIX:EVAPTEMP NOZZLE TEMP - OXCS_NHELIX:SUCTTEMP GAS HEAT - OXCS_NHELIX:GASHEAT SHIELD HEAT - OXCS_NHELIX:EVAPHEAT NOZZLE HEAT - OXCS_NHELIX:SUCTHEAT ALARM - OXCS_NHELIX:ALARM.VALA GAS FLOW - OXCS_NHELIX:GASFLOW LINE PRESSURE - OXCS_NHELIX:BACKPRESS DETECTED GAS TYPE - OXCS_NHELIX:DETGASTYPE SELECTED GAS TYPE - OXCS_NHELIX:SELGASTYPE RUN MODE - OXCS_NHELIX:RUNMODE PHASE (just for run mode = 1 StartUpFail) - OXCS_NHELIX:PHASE
Commands Restart caput OXCS_NHELIX:RESTART 1 Ramp First specify Ramp Rate and the target temperature for the ramp: caput OXCS_NHELIX:RRATE <1-360 (K/hour)> caput OXCS_NHELIX:RTEMP <20-320 (K)> caput OXCS_NHELIX:RAMP 1 Plat First specify the duration time of the plat: caput OXCS_NHELIX:PTIME <1-1440(24hrs) (min)> caput OXCS_NHELIX:PLAT 1
Hold caput OXCS_NHELIX:HOLD 1 Cool First specify the target temperature to cool: caput OXCS_NHELIX:CTEMP <2000-32000 (cK)> caput OXCS_NHELIX:COOL 1 End caput OXCS_NHELIX:END 1 Purge caput OXCS_NHELIX:PURGE 1 Pause caput OXCS_NHELIX:PAUSE 1 Resume caput OXCS_NHELIX:RESUME 1 Stop caput OXCS_NHELIX:STOP 1 ForceHe caput OXCS_NHELIX:FORCEHE 1
Command list for 700 and 800 series (RS232): http://oxcryo.com/serialcomms/700series/nh_command.html
The docs for Ethernet interface communication is under 'docs/' dir.
The protocol file under 'proto/' dir, communicates with N-Helix in a serial fashion (RS232). It was used a conversor to Ethernet port, for network publishing purposes. Ethernet interface communication not implemented but feasible.