3.2 Updating Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.2.1 Upgrading Firmware by PROM Replacement . . . . . . . . . . . . . . 25 3.2.2 Upgrading Firmware by Uploading through C4 Serial Port . . . . 25 Making the physical connection for upload . . . . . . . . . . . . . . . . 26 Running the upload software on the PC . . . . . . . . . . . . . . . . . . 26 Starting the upload on the C4 . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.3 Restoring Setup Parameters to Default Values . . . . . . . . . . . . . . . . . . . . 27 3.4 Fahrenheit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.5 System Operating (Temperature) Range . . . . . . . . . . . . . . . . . . . . . . . . 29 3.6 Probe Out of Range Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.6.1 Effect of Probe Correction on Out of Range Shutdown . . . . . . . 30

3.6.2 Probe Out of Range Shutdown Reported in Error/Status String

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.6.3 Clearing a Probe Out of Range Shutdown . . . . . . . . . . . . . . . . 30 3.7 Internal Error Shutdown Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.7.1 Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.7.2 Memory signature checking . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.7.3 Setup parameter integrity checking . . . . . . . . . . . . . . . . . . . . . . 32

3.8 Software Probe Correction (Calibration) . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.9 Status and Error Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 3.10 Fail-safe System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4. INTELLIGENT 2 PROBE CONTROL

35

4.1

How Intelligent 2 Probe Control functions

36

4.2

Preparing for Intelligent 2 Probe Control

37

4.3

Using Intelligent 2 Probe Control

38

5. LOCAL MODE ( Basic Operation ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.1 Displaying Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.2 Displaying and Changing the Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5.3 Controlling to a Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.4 Compressor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6. PROGRAM MODE

. . . . . 43

6.1

Description of a Program Step

. . . . . 43

 

6.1.1 Format of a Program Step

. . . . . 44

 

6.1.2

Maximizing Ramp Speed & Other Ramp Considerations

. . . . . 45

6.2

Clearing Program Memory (Reinitializing program steps)

. . . . . 46

6.3

Displaying Program Steps

. . . . . 46

6.4

Entering or Changing a Program Step

. . . . . 47

6.5

Insert Program Step

. . . . . 47

6.6

Delete Program step

. . . . . 48

6.7

Running (Executing) a Program

. . . . . 48

 

6.7.1

Program Run Time Information/Considerations

. . . . . 49

 

6.7.2

Run Time Pre-read Errors

. . . . . 49

 

 

No Probe 2 Error

. . . . . 50

4

C4 Manual Rev 7.5.2

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Sigma C4 manual Intelligent 2 Probe Control