S600+ Instruction Manual 
Revised July-2017  Chromatographs  C-11 
C.4.2  Determining the Mole Percentage Set   
This section details how the module selects the mole percentage set. 
Refer to Section C.3, Configuration Type: Keypad Mole Percentage 
Set Only, for information on setting the keypad percentage set. 
Chromatograph  
Set Selected 
The system uses the following logic to select a chromatograph set: 
If the current report has no deviations or critical alarms, then 
  Copy the latest real RD into the Real RD.Chromat field. 
  Copy the latest real CV into the Real CV.Chromat field. 
  Copy the latest mole % set to the in-use mole % set. 
Else 
  If the revert switch is set and a previous report is OK then 
    Copy the last good real RD to the Real RD.Chromat field. 
    Copy the latest real CV to the Real CV.Chromat field. 
    Copy the last good mole % to the in-use mole % set. 
Else 
  Switch to using the keypad mole % set. 
Endif 
C.4.3  Handling Operator Commands  
This section details how the module handles operator commands. 
Select Keypad Mole 
Percentage 
 
Select the keypad set only if it is valid according to the checks outlined 
in Section C.4.2, Determining the Mole Percentage Set. Otherwise, 
leave the in-use set intact. 
Select Chromat Mole 
Percentage 
The system uses the following logic to select a chromat mole 
percentage  
If there are no system alarms and the latest report is OK, then 
  Copy the latest mole % set to the in-use set 
Else 
  If the Revert to Last Good switch is on then.  
    If the prevous report is OK then.  
      Copy the latest mole % set to the in-use set. 
      Copy the latest RD and CV to the in-use set. 
Endif 
  Endif 
Endif 
C.5  Configuration Type: 2251/2350 USA 
For this configuration, use PCSetup to preconfigure the master Modbus 
interface. The master Modbus process interfaces to the 2251/2350 as 
instructed by the chromatograph data handling software. The system 
can then perform a controlled, sequential series of polls, which enables 
the orderly acquisition of analysis report data. 
Note:  The process of configuring a 2251 and 2350 USA 
chromatograph is identical. For that reason, we use 2251 to 
refer to both the 2251 and 2350 device. 
Keypad Mole  
Percentage Set 
Refer to Section C.3, Configuration Type: Keypad Mole Percentage 
Set Only, for information on setting the percentage set.