---
source_files:
  - DataPRO/SLICEDBCommands/CommandBase.cs
  - DataPRO/SLICEDBCommands/CommandPacket.cs
  - DataPRO/SLICEDBCommands/CalibrationCommands.cs
  - DataPRO/SLICEDBCommands/PowerCommands.cs
  - DataPRO/SLICEDBCommands/ArmCommands.cs
  - DataPRO/SLICEDBCommands/NetworkCommands.cs
  - DataPRO/SLICEDBCommands/InformationCommands.cs
generated_at: "2026-04-16T03:47:13.107401+00:00"
model: "Qwen/Qwen3-Coder-Next-FP8"
schema_version: 1
sha256: "054bcdedfc9b5182"
---

# SLICEDB Command Library Documentation

## 1. Purpose

This module provides a structured command framework for interacting with the SLICE DB (Data Acquisition System Electronics) hardware device over a communication interface. It defines an extensible hierarchy of command classes—each representing a specific operation (e.g., querying voltage, setting IP address, arming the system)—that encapsulate protocol-specific details such as command type, sequence numbering, parameter encoding/decoding, and response parsing. The library enables type-safe, consistent, and testable command construction and execution within the DAS (Data Acquisition System) ecosystem.

## 2. Public Interface

### Core Base Classes

#### `CommandBase`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `SliceCommandBase`
- **Constructors**:
  - `CommandBase(ICommunication sock)`  
    Initializes a new command instance using the provided communication socket.
  - `CommandBase(ICommunication sock, int TimeoutMillisec)`  
    Initializes with a custom timeout (in milliseconds).
- **Protected Overrides**:
  - `GetCommandPacket()` → `CommandPacketBase`  
    Returns a new empty `CommandPacket`.
  - `GetCommandPacket(byte[] buffer)` → `CommandPacketBase`  
    Returns a `CommandPacket` initialized from raw bytes.

#### `CommandPacket`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `SliceCommandPacketBase`
- **Nested Types**:
  - `CommandType` enum:  
    `Reserved = 0x00`, `Diagnostics`, `GPIO`, `Information`, `Network`, `Power`, `Arm`
- **Static Members**:
  - `GlobalSequenceNumber` (UInt16): Thread-safe global sequence counter.
  - `GlobalSequenceNumberLock` (object): Lock object for sequence number increment.
- **Constructors**:
  - `CommandPacket()`  
    Default constructor.
  - `CommandPacket(byte[] Bytes)`  
    Constructor from raw byte buffer.
- **Overrides**:
  - `GetNextSequenceNumber()`  
    Atomically assigns the current `GlobalSequenceNumber` to `SequenceNumber`, then increments the global counter.
  - `ConvertByteToCommandType(byte b)` → `object`  
    Casts the byte to a `CommandType` enum value.

### Command Category Abstractions (Abstract Classes)

#### `DiagnosticsCommands`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `CommandBase`
- **Nested Enums**:
  - `Measurements`: `V1`, `BatteryVoltage`, `BatteryChargeCurrent`, `SliceBusCurrent`, `SliceBusVoltage`
  - `Commands`: `Reserved`, `QueryOffset = 0x01`, `SetOffset = 0x02`, `QueryMultiplier = 0x03`, `SetMultiplier = 0x04`
- **Constructors**:
  - `DiagnosticsCommands(ICommunication sock)`
  - `DiagnosticsCommands(ICommunication sock, int TimeoutMillisec)`  
    Sets `command.Type = CommandType.Diagnostics`.
- **Note**: Concrete command classes (`QueryOffset`, `SetOffset`, etc.) are commented out in source.

#### `PowerCommands`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `CommandBase`
- **Nested Enum**:
  - `Commands`: Includes query/set commands for voltages, currents, thresholds, delays, and overvoltage/overcurrent limits (e.g., `QueryV1VoltageMV = 0x01`, `SetSliceBusVoltageMV = 0x06`, `QueryBatteryChargeCurrentOvercurrentLimitMA = 0x17`, etc.)
- **Abstract Members**:
  - `_Command` (Commands): Must be implemented by derived classes to specify the command.
- **Constructors**:
  - `PowerCommands(ICommunication sock)`
  - `PowerCommands(ICommunication sock, int TimeoutMillisec)`  
    Sets `command.Type = CommandType.Power`, and calls `command.SetCommand((byte)_Command, _Command.ToString())`.
- **Overrides**:
  - `CommandToString(ref List<List<string>> lines)`  
    Appends `recorder.ConnectString` to first line.
  - `ResponseToString(ref List<List<string>> lines)`  
    Appends `recorder.ConnectString` to first line.

#### Concrete Power Commands (Examples)
- `QueryV1VoltageMV`
  - `_Command`: `Commands.QueryV1VoltageMV`
  - `V1VoltageMV` (uint): Input voltage (+V1 on P1) in millivolts.
  - `WholePackage()`: Parses response parameter 0 into `_val`.
- `QueryBatteryVoltageMV`
  - `_Command`: `Commands.QueryBatteryVoltageMV`
  - `BatteryVoltageMV` (uint): Battery voltage (+BAT on J1) in millivolts.
  - Sets `MinimumProtocolVersion` via `sock.GetMinProto(...)`.
- `QueryBatteryChargeCurrentMA`
  - `_Command`: `Commands.QueryBatteryChargeCurrentMA`
  - `BatteryChargeCurrentMA` (uint): Battery charge current in milliamps.
- `QuerySliceBusInputCurrentMA`
  - `_Command`: `Commands.QuerySliceBusInputCurrentMA`
  - `SliceBusInputCurrentMA` (uint): Slice bus current in milliamps.
- `QuerySliceBusVoltageMV`
  - `_Command`: `Commands.QuerySliceBusVoltageMV`
  - `SliceBusVoltageMV` (uint): Slice bus voltage in millivolts.
- `SetSliceBusVoltageMV`
  - `_Command`: `Commands.SetSliceBusVoltageMV`
  - `SliceBusVoltageMV` (uint, get/set): Sets `command.Parameter` to 4-byte value.

#### `ArmCommands`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `CommandBase`
- **Nested Enum**:
  - `Commands`: `arm_reserved`, `arm_arm = 0x01`, `arm_disarm = 0x02`, `arm_enablefaultchecking = 0x03`, `arm_disablefaultchecking = 0x04`, `arm_setinverttriggerpolarity = 0x05`, `arm_setinvertstartpolarity = 0x06`, `arm_setrecordingmode = 0x07`, `arm_setpretriggersec = 0x08`, `arm_setposttriggersec = 0x09`, `arm_setmaxevent = 0x0A`, `arm_setonoverride = 0x0B`
- **Abstract Members**:
  - `_Command` (Commands): Must be implemented.
- **Constructors**:
  - `ArmCommands(ICommunication sock)`
  - `ArmCommands(ICommunication sock, int TimeoutMillisec)`  
    Sets `command.Type = CommandType.Arm`, and calls `command.SetCommand(...)`.
- **Overrides**:
  - `CommandToString(ref List<List<string>> list)`  
    Appends `recorder.SerialNumber` to first line.

#### Concrete Arm Commands (Examples)
- `Arm`
  - `_Command`: `Commands.arm_arm`
  - Sets `MinimumProtocolVersion` via `sock.GetMinProto(ProtocolLimitedCommands.Arm)`.
- `Disarm`
  - `_Command`: `Commands.arm_disarm`
  - Sets `MinimumProtocolVersion` via `sock.GetMinProto(ProtocolLimitedCommands.Arm)`.
- `EnableFaultChecking`
  - `_Command`: `Commands.arm_enablefaultchecking`
  - Sets `MinimumProtocolVersion` via `sock.GetMinProto(ProtocolLimitedCommands.EnableFaultChecking)`.
- `DisableFaultChecking`
  - `_Command`: `Commands.arm_disablefaultchecking`
  - Sets `MinimumProtocolVersion` via `sock.GetMinProto(ProtocolLimitedCommands.EnableFaultChecking)`.
- `SetRecordingMode`
  - `_Command`: `Commands.arm_setrecordingmode`
  - `Value` (byte, get/set): Sets `command.Parameter` to 1-byte value.
- `SetPostTriggerSec`
  - `_Command`: `Commands.arm_setposttriggersec`
  - `Value` (float, get/set): Sets `command.Parameter` to 4-byte float.
- `SetONOverride`
  - `_Command`: `Commands.arm_setonoverride`
  - `Value` (bool, get/set): Converts to/from byte for `command.Parameter`.
- `SetInvertTriggerPolarity`, `SetInvertStartPolarity`
  - Similar to `SetONOverride`, with `bool Value` property.

#### `NetworkCommands`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `CommandBase`
- **Nested Enum**:
  - `Commands`: `Reserved`, `QueryIPAddress = 0x01`, `SetIPAddress = 0x02`, `QueryNetmask = 0x03`, `SetNetmask = 0x04`, `QueryDefaultRoute = 0x05`, `SetDefaultRoute = 0x06`, `QueryMACAddress = 0x07`, `SetMACAddress = 0x08`
- **Abstract Members**:
  - `_Command` (Commands): Must be implemented.
- **Constructors**:
  - `NetworkCommands(ICommunication sock)`
  - `NetworkCommands(ICommunication sock, int TimeoutMillisec)`  
    Sets `command.Type = CommandType.Network`, and calls `command.SetCommand(...)`.
- **Overrides**:
  - `CommandToString(ref List<List<string>> list)`  
    Appends `recorder.ConnectString` to first line.
  - `ResponseToString(ref List<List<string>> lines)`  
    Appends `recorder.ConnectString` to first line.

#### Concrete Network Commands (Examples)
- `QueryIPAddress`, `SetIPAddress`
  - `IPAddress` (string): Read-only for query, read/write for set. Set allocates `command.Parameter` as `new byte[value.Length + 1]`.
- `QueryNetmask`, `SetNetmask`
  - `Netmask` (string): Same pattern as IP.
- `QueryDefaultRoute`, `SetDefaultRoute`
  - `DefaultRoute` (string): Same pattern.
- `QueryMACAddress`, `SetMACAddress`
  - `MACAddress` (string): Same pattern.

#### `InformationCommands`
- **Namespace**: `DTS.DASLib.Command.SLICEDB`
- **Inherits**: `CommandBase`
- **Nested Enum**:
  - `Commands`: `Reserved`, `QuerySerialNumber = 0x01`, `SetSerialNumber = 0x02`, `QueryFirmwareVersion = 0x03`, `QueryTime = 0x04`, `SetTime = 0x05`, `QueryDebugLevel = 0x06`, `SetDebugLevel = 0x07`, `QueryKernelVersion = 0x08`, `QueryMSPFirmwareVersion = 0x09`, `QueryProtocolVersion = 0x0A`, `QueryCalibrationDaysSince1970_01_01 = 0x0F`, `SetCalibrationDaysSince1970_01_01 = 0x10`
- **Abstract Members**:
  - `_Command` (Commands): Must be implemented.
- **Constructors**:
  - `InformationCommands(ICommunication sock)`
  - `InformationCommands(ICommunication sock, int TimeoutMillisec)`  
    Sets `command.Type = CommandType.Information`, and calls `command.SetCommand(...)`.
- **Overrides**:
  - `CommandToString(ref List<List<string>> list)`  
    Appends `recorder.SerialNumber` to first line.

#### Concrete Information Commands (Examples)
- `QuerySerialNumber`, `SetSerialNumber`
  - `SerialNumber` (string): Read-only for query, read/write for set. Set allocates `command.Parameter` as `new byte[value.Length + 1]`.
- `QueryFirmwareVersion`, `QueryKernelVersion`, `QueryMSPFirmwareVersion`
  - `FirmwareVersion`, `KernelFirmwareVersion`, `MSPFirmwareVersion` (string): Read-only, parsed from response parameter 0.
- `QueryTime`, `SetTime`
  - `CurrentTime` (DateTime): Query parses seconds/microseconds from parameters 0/4 into a `DateTime` (epoch-based). Set converts `DateTime` to seconds/microseconds and writes to `command.Parameter`.
- `QueryProtocolVersion`
  - `ProtocolVersion` (byte): Read-only, parsed from parameter 0.
- `QueryCalibrationDaysSince1970_01_01`, `SetCalibrationDaysSince1970_01_01`
  - `CalibrationDaysSince1970_01_01` (string): Read-only for query, read/write for set. Set allocates `command.Parameter` as `new byte[value.Length + 1]`.

## 3. Invariants

- **Sequence Numbering**: Sequence numbers are globally unique and monotonically increasing across all command instances due to the `lock` around `GlobalSequenceNumber` in `GetNextSequenceNumber()`.
- **Command Type Assignment**: All concrete command classes must set `command.Type` to the appropriate `CommandPacket.CommandType` (e.g., `Power`, `Arm`, `Network`) in their base constructor.
- **Command Code Assignment**: All concrete command classes must call `command.SetCommand((byte)_Command, _Command.ToString())` in their base constructor.
- **Parameter Encoding for Strings**: For commands accepting string parameters (e.g., `SetIPAddress`, `SetSerialNumber`), the parameter buffer is allocated as `new byte[value.Length + 1]` to accommodate a null terminator.
- **Parameter Encoding for Numeric Types**: 
  - `uint` parameters use `sizeof(uint)` (4 bytes).
  - `float` parameters use `sizeof(float)` (4 bytes).
  - `byte`/`bool` parameters use `sizeof(byte)` (1 byte).
- **Protocol Version Handling**: Commands that require minimum protocol versions (e.g., `QueryBatteryVoltageMV`, `Arm`) set `MinimumProtocolVersion` via `sock.GetMinProto(...)` in their constructors.
- **Response Parsing**: All `WholePackage()` overrides parse response parameters only when `response.Status == CommandStatus.StatusNoError`; otherwise, they initialize output fields to default values (e.g., `0`, `string.Empty`, `DateTime(1970,1,1)`).
- **Thread Safety**: Sequence number generation is thread-safe via `lock (GlobalSequenceNumberLock)`.

## 4. Dependencies

### External Dependencies (from imports):
- `System.*`: Core .NET libraries (`System`, `System.Collections.Generic`, `System.Text`, `System.Threading`, `System.Reflection`, `System.IO`, `System.Diagnostics`).
- `DTS.Common.ICommunication`: Provides `ICommunication` interface.
- `DTS.Common.Interface.DASFactory`: Provides `ICommunication` (redundant import) and `DASFactory` types.
- `DTS.Common.Enums.DASFactory`: Provides `DFConstantsAndEnums.CommandStatus` and `DFConstantsAndEnums.ProtocolLimitedCommands`.

### Internal Dependencies:
- Inherits from `SliceCommandBase` and `SliceCommandPacketBase` (not shown in source, but referenced).
- Uses `recorder` object (inferred from `recorder.ConnectString`, `recorder.SerialNumber`), likely a property of the base class.
- Uses `response` and `command` objects (inferred from base class and usage), likely properties of `SliceCommandBase`.

### Inferred Usage:
- This module is used by higher-level components that construct and execute commands via `ICommunication`.
- The `CommandBase` hierarchy is the primary public interface for command execution.

## 5. Gotchas

- **Duplicate Class Name**: `SetCalibrationDaysSince1970_01_01` and `QueryCalibrationDaysSince1970_01_01` are defined twice in `InformationCommands.cs` (lines 1 and 2), both with identical names and implementations. This will cause compilation errors unless one is commented out or renamed.
- **Incorrect ResponseToString in QueryProtocolVersion**: Outputs `"Firmware Version: {ProtocolVersion}"` instead of `"Protocol Version: {ProtocolVersion}"`.
- **Incorrect ResponseToString in QueryKernelVersion & QueryMSPFirmwareVersion**: Both output `"Firmware Version: {Version}"` instead of distinguishing `"Kernel Firmware Version"` or `"MSP Firmware Version"`.
- **String Parameter Allocation**: All string-setting commands allocate `new byte[value.Length + 1]`, but there is no validation that `value` is non-null or within expected length limits. Passing `null` will throw a `NullReferenceException`.
- **Float Parameter Precision**: `SetPostTriggerSec` converts `float` to `command.Parameter` without rounding or validation; floating-point precision errors may occur.
- **Epoch Assumption**: `QueryTime` and `SetTime` assume Unix epoch (`1970-01-01 00:00:00 UTC`) and do not account for time zones or leap seconds.
- **Missing Concrete Commands**: `DiagnosticsCommands` defines `QueryOffset`, `SetOffset`, etc., but their implementations are commented out—no concrete classes exist for these.
- **Protocol Version Mismatch**: `DisableFaultChecking` uses `ProtocolLimitedCommands.EnableFaultChecking` for `MinimumProtocolVersion`, likely a copy-paste error.
- **Redundant `ICommunication` Import**: `InformationCommands.cs` imports both `DTS.Common.ICommunication` and `DTS.Common.Interface.DASFactory`, and uses `ICommunication` directly in `SetCalibrationDaysSince1970_01_01` constructor—suggests inconsistent usage or legacy code.
- **No Error Handling in `WholePackage()`**: Some `WholePackage()` methods (e.g., `QueryBatteryChargeCurrentMA`) check `StatusNoError` only for success path, but others (e.g., `QueryV1VoltageMV`) do not—leading to inconsistent behavior on error.