epicsdev_ps_caen_fastps

EPICS PVAccess server for CAEN FAST-PS power supplies, implemented with epicsdev.

Main server module: caen_fastps/main.py
IOC reference DB: ioc/fastps.db
Phoebus screen generator: opi/generate_screen.py

• Main server module: epicsdev_ps_caen_fastps/main.py
• IOC reference DB: docs/fastps.db
• Phoebus screen generator: opi/generate_opi.py

Features

• TCP remote control interface to FAST-PS (default port 10001)
• PV set modeled after the IOC records in docs/fastps.db
• Setpoint control with optional ramping:
  • Voltage, Current, RampEnable
• Output and diagnostic readback:
  • OutputVoltage, OutputCurrent, GroundCurrent, DCLinkVoltage, HeatsinkTemp
• Status and state control:
  • StatusMSB, StatusLSB, StatusReset, Enable, RegulationMode, Upmode
• Ramp-rate control:
  • RampRateV, RampRateI
• Device identity and inferred limits:
  • Model, Version, Limits
• Generic command passthrough:
  • instrCmdS, instrCmdR

FAST-PS protocol mapping

Implemented command families:

• VER
• MON, MOFF
• LOOP, LOOP ?
• MWV, MWV ?, MWVR
• MWI, MWI ?, MWIR
• MRESET
• MST
• UPMODE:?, UPMODE:<mode>
• MSRV:?, MSRV:<value>
• MSRI:?, MSRI:<value>
• MRV, MRI, MGC, MRP, MRT

Requirements

• Python 3.10+
• epicsdev and its runtime dependencies (including p4p)
• Network access to the CAEN FAST-PS device

Install and run

• `pip install epicsdev_ps_caen_fastps
• python -m epicsdev_ps_caen_fastps

Useful arguments:

• --host FAST-PS IP/hostname (default: 130.199.104.57)
• --port TCP port (default: 10001)
• --timeout socket timeout in seconds (default: 2.0)
• -d, --device PV prefix device root (default: caen_fastps)
• -i, --index PV prefix index (default: 0)
• -v increase verbosity (-vv for more)
• -a, --autosave enable autosave with optional directory
• -c, --recall disable restoring autosaved values on startup

Example:

• python -m epicsdev_ps_caen_fastps --host 130.199.104.57 -d caen_fastps:

Default PV prefix:

• caen_fastps0:

Generate a Phoebus screen

Generate .bob OPI file:

• python generate_opi.py -t FAST-PS pva://caen_fastps:0:

Options:

• -t, --title screen title
• prefix PV prefix macro/value (default: $(DEV):)

Output:

• opi/caen_fastps.bob

Screenshot

• docs/opi_caen_fastps.jpg

Notes

• The server uses common epicsdev control PVs such as server, sleep, status, and HEARTBEAT.
• Enable is synchronized from bit 0 of StatusLSB during polling.
• For unsupported/custom diagnostics, use instrCmdS and read the reply from instrCmdR.