Fix

2016-09-01 16:23:15 +08:00
parent 232f36ad4f
commit c0984d5c3f
1 changed files with 9 additions and 0 deletions
--- a/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs
+++ b/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs
@@ -24,6 +24,15 @@ namespace Modbus.Net.Siemens
            return AsyncHelper.RunSync(() => SendReceiveAsync(isLittleEndian, content));
        }

+        public override async Task<byte[]> SendReceiveAsync(bool isLittleEndian, params object[] content)
+        {
+            if (ProtocalLinker == null || !ProtocalLinker.IsConnected)
+            {
+                await ConnectAsync();
+            }
+            return await base.SendReceiveAsync(isLittleEndian, content);
+        }
+
        private async Task<OutputStruct> ForceSendReceiveAsync(ProtocalUnit unit, InputStruct content)
        {
            return await base.SendReceiveAsync(unit, content);