Sigma C4 manual Intelligent 2 Probe Control

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