57 lines
2.4 KiB
C#
57 lines
2.4 KiB
C#
using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Modbus.IntegrationTests.DL205;
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/// <summary>
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/// Verifies DL205/DL260 binary-coded-decimal register handling against the
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/// <c>dl205.json</c> pymodbus profile. HR[1072] = 0x1234 on the profile represents
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/// decimal 1234 (BCD nibbles). Reading it as <see cref="ModbusDataType.Int16"/> would
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/// return 0x1234 = 4660; the <see cref="ModbusDataType.Bcd16"/> path decodes 1234.
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/// </summary>
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[Collection(ModbusSimulatorCollection.Name)]
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[Trait("Category", "Integration")]
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[Trait("Device", "DL205")]
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public sealed class DL205BcdQuirkTests(ModbusSimulatorFixture sim)
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{
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[Fact]
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public async Task DL205_BCD16_decodes_HR1072_as_decimal_1234()
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{
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if (sim.SkipReason is not null) Assert.Skip(sim.SkipReason);
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if (!string.Equals(Environment.GetEnvironmentVariable("MODBUS_SIM_PROFILE"), "dl205",
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StringComparison.OrdinalIgnoreCase))
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{
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Assert.Skip("MODBUS_SIM_PROFILE != dl205 — skipping (standard profile does not seed HR[1072]).");
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}
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var options = new ModbusDriverOptions
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{
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Host = sim.Host,
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Port = sim.Port,
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UnitId = 1,
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Timeout = TimeSpan.FromSeconds(2),
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Tags =
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[
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new ModbusTagDefinition("DL205_Count_Bcd",
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ModbusRegion.HoldingRegisters, Address: 1072,
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DataType: ModbusDataType.Bcd16, Writable: false),
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new ModbusTagDefinition("DL205_Count_Int16",
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ModbusRegion.HoldingRegisters, Address: 1072,
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DataType: ModbusDataType.Int16, Writable: false),
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],
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Probe = new ModbusProbeOptions { Enabled = false },
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};
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await using var driver = new ModbusDriver(options, driverInstanceId: "dl205-bcd");
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await driver.InitializeAsync("{}", TestContext.Current.CancellationToken);
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var results = await driver.ReadAsync(["DL205_Count_Bcd", "DL205_Count_Int16"],
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TestContext.Current.CancellationToken);
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results[0].StatusCode.ShouldBe(0u);
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results[0].Value.ShouldBe(1234, "DL205 BCD register 0x1234 represents decimal 1234 per the DirectLOGIC convention");
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results[1].StatusCode.ShouldBe(0u);
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results[1].Value.ShouldBe((short)0x1234, "same register read as Int16 returns the raw 0x1234 = 4660 value — proves BCD path is distinct");
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}
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}
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