B1 时间戳核验报告（Modbus TCP）

场景：同通道 3 台从站（slave-1/2 正常，slave-3 恢复后在线）
方法：采集层 PollStart 日志，统计同一轮三台设备的触发时间差 Δt
目标：任意两个设备采集时间间隔 Δt ≥ 10ms

原始样本（节选）

2026-02-14 16:35:51

16:35:51.593 Slave Device 1
16:35:51.605 Slave Device 2
16:35:51.617 slave-3

2026-02-14 16:35:52

16:35:52.592 Slave Device 1
16:35:52.604 Slave Device 2
16:35:52.625 slave-3

2026-02-14 16:35:53

16:35:53.593 Slave Device 1
16:35:53.605 Slave Device 2
16:35:53.617 slave-3

2026-02-14 16:35:54

16:35:54.592 Slave Device 1
16:35:54.605 Slave Device 2
16:35:54.617 slave-3

2026-02-14 16:35:55

16:35:55.593 Slave Device 1
16:35:55.605 Slave Device 2
16:35:55.617 slave-3

2026-02-14 16:35:56

16:35:56.593 Slave Device 1
16:35:56.605 Slave Device 2
16:35:56.617 slave-3

2026-02-14 16:35:57

16:35:57.592 Slave Device 1
16:35:57.605 Slave Device 2
16:35:57.618 slave-3

2026-02-14 16:35:58

16:35:58.593 Slave Device 1
16:35:58.605 Slave Device 2
16:35:58.617 slave-3

2026-02-14 16:35:59

16:35:59.592 Slave Device 1
16:35:59.605 Slave Device 2
16:35:59.617 slave-3

2026-02-14 16:36:00

16:36:00.592 Slave Device 1
16:36:00.605 Slave Device 2
16:36:00.617 slave-3

计算结果（Δt：相邻设备 PollStart 间隔）

16:35:51 → Δt(1→2)=12ms, Δt(2→3)=12ms
16:35:52 → Δt(1→2)=12ms, Δt(2→3)=21ms
16:35:53 → Δt(1→2)=12ms, Δt(2→3)=12ms
16:35:54 → Δt(1→2)=13ms, Δt(2→3)=12ms
16:35:55 → Δt(1→2)=12ms, Δt(2→3)=12ms
16:35:56 → Δt(1→2)=12ms, Δt(2→3)=12ms
16:35:57 → Δt(1→2)=13ms, Δt(2→3)=13ms
16:35:58 → Δt(1→2)=12ms, Δt(2→3)=12ms
16:35:59 → Δt(1→2)=13ms, Δt(2→3)=12ms
16:36:00 → Δt(1→2)=13ms, Δt(2→3)=12ms

结论

所有样本中，任意相邻两设备的 PollStart 时间间隔 Δt ≥ 10ms
满足南向采集通道回归验证测试方案中 D 组间隔核验要求