Telemark Cryogenics 2400 - Serial Commands Available

Telemark Cryogenics Microprocessor Based Cryochillers
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Revision 1.0.7 October 2018
2.9.2 Commands Available when Using Ethernet, RS232/485 Control
Command Command
Type
Operation
w2o Write Turns TCP/IP Communications link on
w2f Write Turns all communication links off
wso Write Turns the Unit on (compressor running)
wsf Write Turns the unit off (turns the compressor
off)
wss Write Puts coil #1 into Standby
w2s Write Puts coil #2 into Standby
wsc Write Puts Coil #1 into cool
w2c Write Puts Coil #2 into cool
wsd Write Puts Coil #1 into defrost
w2d Write Puts Coil #2 into defrost
v Write Start the data logging function (TCP/IP
GUI)
q Write Stop the data logging function (TCP/IP
GUI)
?w Write Displays “write” commands (list format)
?r Write Displays “read” commands (list format)
rdp
Read
Reads the Discharge Pressure
rsp Read Reads the Suction Pressure
rci
Read
Reads the Coil In (CI) temperature
rco Read Reads the Coil Out (CO) temperature
rlt Read Reads the Liquid Line (LT) temperature
rct Read Reads the Coldest (CT) temperature
ri2 Read
Reads the Coil In #2 (CI#2) temperature
(dual coil units only).
rc2 Read
Reads Coil Out #2 (CO#2) temperature
(dual units only).
rls Read Reads the Liquid line shut down
temperature.
rdt Read Reads the Defrost termination
Temperature.
rpr Read Reads the set Point 1 relay temperature.
rp2 Read Reads the set point 2 relay temperature.
rh1 Read Read Compressor #1 on hours running.
rh2 Read Read Compressor #2 on hours running (if
fitted).
rsn Read Reads the units serial number.
rsr Read Reads the software Revision.
rip Read Reads the current IP address.
Note:
“write” commands are case sensitive.
Table 9. Read Write Serial Commands