On-BoardÂ® W Module Programming and Operation ... - PTB Sales

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On-Board W Module Programming and Operation CTI-CRYOGENICS HELIX TECHNOLOGY CORPORATION Table B-1: On-Board Module RS-232 Commands (Continued) Command Parameter Description n None Returns the last measured ROR value computed during a ROR test cycle as an integer value. This value matches that presented 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 incremented 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. v None Inquires pump for several flag conditions combined as bits in one response. The bits are biased by "0" for ASCII printable results. The bit weights are: 1. Contending for rough valve is TRUE. 2. TRUE when purge gas fail detected in REGEN. 4. TRUE when heater failure detected in REGEN. z [0,1, ?] Set/Clear/Query the user keypad access lockout state. When True, the user is limited to the use of the MONITOR and SERVICE functions on the keypad/display. P/N 8040365 B-11
Appendix B - On-Board Module RS-232 Interface Protocol Format CTI-CRYOGENICS HELIX TECHNOLOGY CORPORATION B-12 P/N 8040365
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