MPI TA-5000A remote control (Ethernet)

# Control the MPI TA-5000A using Ethernet - VXI interface
# D.Porret - EP-ESE-ME
# 09.2024

# requirement python-vxi11

import vxi11
import time


# machine protocol accept only SCFM for flow value
def convert_sfcm(v_lpm):
    if v_lpm<113 or v_lpm>708:
        raise ValueError("Flow value must be between 113 Lto 708 L per minute")
    return int(round (v_lpm/28.31), 0) # 4 to 25 SFCM


thermal = vxi11.Instrument("192.168.1.20")

thermal.write("FLSE 4") # flow rate (SFCM) - minimum
thermal.write("WNDDW 01.0") # temperature window (degC) +/- 1 degC


head = thermal.ask("HEAD?")

if int(head) == 1:
    thermal.write("FLOW 1") # flow on
    thermal.write("SETP 020.0") # temperature setpoint (degC)
    thermal.write("SOAK 30") # soak time (s)

    while True:
        state = thermal.ask("TECR?") # get status
        print(state)
        if int(state) == 0x1: # At temperature
            print("At Temperature")
            break
        time.sleep(1)
    thermal.write("FLOW 0") # flow off

else:    
    print("The head is not down, exiting ...")
    quit