From 312f50174281e69b914bc85904c42920fae805ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BF=B1=20=E6=B2=88?= <2401809606@qq.com>
Date: Sun, 18 Jan 2026 19:28:00 +0800
Subject: [PATCH] plc

---
 applications/PLC_link.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/applications/PLC_link.c b/applications/PLC_link.c
index 94ba06f..03544dc 100644
--- a/applications/PLC_link.c
+++ b/applications/PLC_link.c
@@ -50,7 +50,6 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }else
     {
         rt_thread_mdelay(500);
-        return;
     }
 
     // 输出 m0256 -> RTU 2256
@@ -68,10 +67,9 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
     // 写入 Modbus
     int mwy = mb_write_bits(hinst, 2256, DO_TABLE_SIZE, w_buffer);
-    if (mwy <= 0)
+    if (mwy ==0)
     {
         rt_thread_mdelay(500);
-        return;
     }
 
     //输入寄存器d0->6000
@@ -86,7 +84,6 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
         }
     }else {
         rt_thread_mdelay(500);
-        return;
     }
 
     //输出寄存器d100->6100
@@ -97,10 +94,9 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
     // 写入 Modbus
     int mwd = mb_write_regs(hinst, 6100, AO_TABLE_SIZE, w_regsD);
-    if (mwd > 0)
+    if (mwd == 0)
     {
         rt_thread_mdelay(500);
-        return;
     }
 }