diff --git a/DLPilot/release/DLPilot.exe b/DLPilot/release/DLPilot.exe
index 5ccde8b..11a019d 100644
Binary files a/DLPilot/release/DLPilot.exe and b/DLPilot/release/DLPilot.exe differ
diff --git a/DLPilot/src/dlpc_rs485.py b/DLPilot/src/dlpc_rs485.py
index c22c087..7668204 100644
--- a/DLPilot/src/dlpc_rs485.py
+++ b/DLPilot/src/dlpc_rs485.py
@@ -185,15 +185,29 @@ class FrameParser:
                 del self._buf[:1]
 
 
+def _clean(s):
+    """控制字符 -> '·': 二进制载荷按 ASCII 解出的 NUL 等会污染日志行,
+    且 Windows 剪贴板遇 NUL 直接截断复制内容"""
+    return ''.join(c if ord(c) >= 0x20 and ord(c) != 0x7F else '·' for c in s)
+
+
 def describe(fr):
-    """响应帧 -> 人读文本: TYPE 译码 + payload, err:N 追加 DLPC 错误释义"""
+    """响应帧 -> 人读文本: TYPE 译码 + payload, err:N 追加 DLPC 错误释义。
+
+    二进制载荷(M303/M304/M305 电源实测)不以 ASCII 展示 —— 改显 hex,
+    避免乱码与 NUL 截断剪贴板(值由 GUI 读数框/CLI format_power 译码)。"""
+    pl = fr.payload
+    if any(ord(c) < 0x20 or ord(c) == 0x7F for c in pl):
+        pl = f'[二进制载荷 {fr.raw[3:-1].hex(" ").upper()}]'
+    else:
+        pl = _clean(pl)
     if fr.type_code == 0xF0:
-        text = fr.payload or 'ok'
+        text = pl or 'ok'
     else:
         text = TYPE_NAMES.get(fr.type_code, f'TYPE=0x{fr.type_code:02X}')
-        if fr.payload:
-            text += f'  {fr.payload}'
-    m = re.search(r'err:(\d+)', fr.payload)
+        if pl:
+            text += f'  {pl}'
+    m = re.search(r'err:(\d+)', pl)
     if m:
         text += f'（{DLPC_ERR_NAMES.get(int(m.group(1)), "未知错误码")}）'
     return text
diff --git a/DLPilot/src/selftest_rs485.py b/DLPilot/src/selftest_rs485.py
index 13ea406..28b1bf4 100644
--- a/DLPilot/src/selftest_rs485.py
+++ b/DLPilot/src/selftest_rs485.py
@@ -97,5 +97,11 @@ check('M305 功率(0x8CA0=36000mW)', d.format_power('M305', frames[0]),
 check('M305 拒绝双字节载荷', d.format_power(
     'M305', d.FrameParser().feed(bytes.fromhex('B5 F0 02 8C A0 1E'))[0]), None)
 
+# 10) 二进制载荷的日志行安全: 无控制字符(NUL 会截断 Windows 剪贴板), 以 hex 展示
+frames = d.FrameParser().feed(bytes.fromhex('B5 F0 02 00 34 26'))   # M304 应答(含 NUL)
+desc = d.describe(frames[0])
+check('二进制载荷 hex 展示', desc, '[二进制载荷 00 34]')
+check('日志行无控制字符', any(ord(c) < 0x20 for c in desc), False)
+
 print('RESULT:', 'FAIL:' + ','.join(fails) if fails else 'ALL PASS')
 sys.exit(1 if fails else 0)