On-Board FastRegen Control Module Programming and Operation Instructions
P/N 8040406
B-13
C
HELIX TECHNOLOGY CORPORATION
-
TI
CRYOGENICS
k
None
Returns an internal interval timer value in minutes. When in
the appropriate phase, this value represents the time remaining
in the phase (delay start, cryo restart, purge time). Times from
1 to 60 seconds return as 1 minute. Times from 61 seconds to
120 seconds return as 2 minutes. Zero returns as 0 minutes.
l
None
Returns the number of failed purge cycles as an integer value.
This value starts at "0" and increments each time a purge phase
fails.
m
None
Returns the number of failed and extended ROR test cycles as
an integer value. This value starts at "0" and increments each
time a ROR test phase fails.
n
None
Returns the last measured ROR value computed during a ROR
test cycle as an integer value. This value matches that pre-
sented on the keypad/display.
r
P | X, form is
rP or rX
Polls an event count value which specifies the completion of
either the pump (P) or AUX (X) TC auto zero sequence. This
value is used by a remote computer to tell when an initiated
auto zero is complete.
Returns a modulo 256 (0-255) numeric value which is incre-
mented each time the auto zero operation completes. The
remote unit can detect the completion of the event by a change
in value.
s
None
Polls an event count modulo 256 (0-255) which is incremented
each time a REGEN cycle is performed. Used to indicate
whether the REGEN idle message should be REGEN COM-
PLETE or REGEN OFF.
t
? | =, form is t?
or t=
Command to either inquire (t?) or acknowledge and clear (t=)
the power recovery flag. A response of 1 is COOLDOWN, 2 is
REGENERATION, 3 is IN PROCESS, 4 is RECOVERED, 5 is
CHECK PUMP TEMP. Clear the flag with the t= command
after inquiring on the flag value.
u
None
Inquires pump for information in byte fail_cause of pump,
which contains 0 if AC to pump OK, else bits 4,5 set for fail of
each phase. Codes are@, P,p. Used to display of power phase
information of pump. OFF, ON, ERR1, and ERR2.
Table B-1: On-Board Module RS-232 Commands (Continued)
Command
Parameter
Description