Sigma manual C4 Manual Rev

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byte 01 (status byte replica), the first 32 bytes (256 bits) are “event triggered”. The second 32 bytes (256 bits) are “status” or “state set”.

Except for bits 0, 1 & 2 of the byte 01 (status byte replica), each of the bits in bytes 0-31 are set once when the condition that that bit reports becomes true. If the condition becomes false, the bit remains set. Except for bits 0, 1 & 2 of the byte 01 (status byte replica), the bits in bytes 0-31 are all reset in the event of a QE or QEA command, a system reset, or a power off condition.

Each of the bits in bytes 32-63 are set when the condition that the bit reports becomes true and is reset if that condition becomes false. The bits mirror the instantaneous state of the condition that they report. These bits are not reset by the event of a QE or QEA command, but are reset during system reset or power off condition.

Each of the bytes in the Error/Status String has a defined purpose. For instance, all the probe correction error bits are in the same byte. This makes is easier to parse the Error/Status String and branch to error routines because basic groups of errors can be checked at the byte level.

Note: Byte 00 of the Error/Status String is the same Error Byte that is available using RE and REA commands. Byte 00 is cleared each time a QE or QEA command is issued. This byte is also cleared anytime the RE or REA commands are issued to read the Error Byte. This byte is maintained in the Error/Status String so that it is not necessary to use two commands to obtain the Error Byte and the extended error information contained in the Error/Status String.

Byte 01 of the Error/Status String is the same as the EIA-232 version of the Status Byte. The bits 3 & 4 are cleared from both the Status Byte and byte 01 of the Error/Status String when the Error/Status String is read.

Many of the bits in the Error/Status String have no current definition and will always be reset (0). Each successive release of Sigma Systems C4 controller firmware may implement additional bit definitions. Each new list will be backward compatible. The length of the Error/Status String will remain at 64 bytes. The table below shows the firmware release in which the bit was first used and the definitions for the currently defined bits.

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C4 Manual Rev 7.5.2

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Contents Programmable Temperature Controller / Interface Sigma SystemsC4 Manual Rev Table of Contents Intelligent 2 Probe Control C4 Manual Rev C4 Manual Rev C4 Manual Rev C4 Manual Rev Introduction Models C4 & CC-3.5ExplainedGeneral Description Custom Features / Interchangeability Warning Release 7.5.2 FirmwareC4 vs. CC-3 Differences What’s New Firmware Uploads Forced Start from Prom Firmware Internal Error Shutdown Conditions Intelligent 2 Probe Control Probe Averaging Program Mode Step Insert & Delete RSA Remote Mode Setup Parameter Commands Physical Description Front PanelMode Switch Clear Prog Rear Panel Connections J1 TOP200 100c 392 148f General Operation & Error ConditionsC3-5 Rel Startup DisplaysUpdating Firmware Upgrading Firmware by Prom Replacement Making the physical connection for upload Su res Restoring Setup Parameters to Default ValuesRs load Ee busy and then su doneC4 Manual Rev P1f Fahrenheit OperationSystem Operating Temperature Range P1 lo P1 hiProbe Out of Range Shutdown P1 err P1 -err Internal Error Shutdown Conditions Res errAll res Su err Software Probe Correction CalibrationStatus and Error Reporting Fail-safe System C4 Manual Rev Intelligent 2 Probe Control How Intelligent 2 Probe Control functions Preparing for Intelligent 2 Probe Control Using Intelligent 2 Probe Control Local Mode Basic Operation Displaying TemperatureS1 102.6 s1f S1 nsp S1f nspDisplaying and Changing the Setpoint Sor -sor Sp errControlling to a Setpoint C4 Manual Rev Program Mode 06.0Description of a Program Step Ramp time Substep Step Data 00.000.1 00.2Maximizing Ramp Speed & Other Ramp Considerations Clearing Program Memory Reinitializing program steps Displaying Program Steps not during executionEntering or Changing a Program Step Insert Program StepPress CLEAR/ENTRY Delete Program step Press CLEAR/ENTRY Press CLEAR/ENTRY againRunning Executing a Program Program Run Time Information/Considerations 007 nop2 Loop005 sor Sor Special Commands External Compressor On Common Programming Issues C4 Manual Rev Remote Mode EIA-232 InterfaceIEEE-488 Interface Command Summary by functional group System Information QueriesSystem Information Queries For Celsius mode For parameters numbered 0 through C4 Manual Rev Operation Information Queries & Commands REerror byteCRLF C4 Manual Rev Qccrlf PTnCRLF Setup Parameter Commands SC1 0 2.3 100 WP 6 5 5CRLF Upcrlf System Operation Commands Celsius mode Will hold the current setpoint for 1 hour and 20 minutes U1c 65.0 u1f Error and Status Reporting Overview IEEE-488 GpibTemperature in 20 minutes C4 Manual Rev Error/Status String Bit Definitions C4 Manual Rev Setup Mode PID controller, Integral term Adjustment not Displaying the Field Values Changing the Value of a Setup Field Two Probe Mode Setup fieldAuto-start Mode Setup field Blower Shut-off Mode Setup field Temperature Control Terms PID Setup fields 0, 10, 11Entering probe correction setup data C4 Manual Rev C4 Manual Rev Appendix Programming Examples & Notes00.3 00.000.2 00.4Using shortcuts to shorten program entry time 9900 DISP/CNTLSTART/STOPCLEAR/ENTRY 6 Enter 04.3 04.004.2 04.407.3 07.007.2 07.4C4 Manual Rev Sigma Systems C4 Programming Worksheet Sample Command Structure for IEEE-488 Gpib Operation Disp A$ Installation and Use of TTL Outputs and Input Field Calibration of Model C4 Controller 101102 Troubleshooting 103Noise Immunity 105 Firmware Upload Problems Temperature Control PID Tuning & Problems 107108 109 110 111 U1f 102.7 Technical Support, Repairs & ReturnsIndex 113114 Gpib 115IEEE488 Gpib 117 118 SRQ 119120