diff --git a/Modbus.Net/Modbus.Net/Job/JobChainingJobLIstenerWithDataMapRepeated.cs b/Modbus.Net/Modbus.Net/Job/JobChainingJobLIstenerWithDataMapRepeated.cs
index 45833de..dcec7b2 100644
--- a/Modbus.Net/Modbus.Net/Job/JobChainingJobLIstenerWithDataMapRepeated.cs
+++ b/Modbus.Net/Modbus.Net/Job/JobChainingJobLIstenerWithDataMapRepeated.cs
@@ -13,13 +13,17 @@ namespace Modbus.Net
     /// </summary>
     public class JobChainingJobLIstenerWithDataMapRepeated : JobChainingJobListenerWithDataMap
     {
+        protected int RepeatCount { get; set; }
+
         /// <summary>
         /// JobChaningJobListener with DataMap passing from parent job to next job
         /// </summary>
         /// <param name="name">Job name</param>
         /// <param name="overwriteKeys">If key is overwritable, parent job will pass the value to next job event next job contains that key</param>
-        public JobChainingJobLIstenerWithDataMapRepeated(string name, ICollection<string> overwriteKeys) : base(name, overwriteKeys)
+        /// <param name="repeatCount">Repeatation count for job chain</param>
+        public JobChainingJobLIstenerWithDataMapRepeated(string name, ICollection<string> overwriteKeys, int repeatCount) : base(name, overwriteKeys)
         {
+            RepeatCount = repeatCount;
         }
 
 #nullable enable
@@ -29,6 +33,7 @@ namespace Modbus.Net
             CancellationToken cancellationToken = default)
         {
             await base.JobWasExecuted(context, jobException, cancellationToken);
+            if (RepeatCount == 0) return;
             ChainLinks.TryGetValue(context.JobDetail.Key, out var sj);
             if (sj == null)
             {
@@ -39,7 +44,10 @@ namespace Modbus.Net
                     chainRoot = chainParent;
                     chainParent = ChainLinks.FirstOrDefault(p => p.Value == chainParent).Key;
                 }
-
+                if (RepeatCount > 0)
+                {
+                    RepeatCount--;
+                }
                 var sjJobDetail = await context.Scheduler.GetJobDetail(chainRoot);
                 await context.Scheduler.AddJob(sjJobDetail!, true, false);
                 await context.Scheduler.TriggerJob(chainRoot, cancellationToken).ConfigureAwait(false);
diff --git a/Modbus.Net/Modbus.Net/Job/MachineJobScheduler.cs b/Modbus.Net/Modbus.Net/Job/MachineJobScheduler.cs
index 30ad145..9a93a6c 100644
--- a/Modbus.Net/Modbus.Net/Job/MachineJobScheduler.cs
+++ b/Modbus.Net/Modbus.Net/Job/MachineJobScheduler.cs
@@ -80,7 +80,7 @@ namespace Modbus.Net
             IJobListener listener;
             if (interval <= 0)
             {
-                listener = new JobChainingJobLIstenerWithDataMapRepeated("Modbus.Net.DataQuery.Chain." + triggerKey, new string[2] { "Value", "SetValue" });
+                listener = new JobChainingJobLIstenerWithDataMapRepeated("Modbus.Net.DataQuery.Chain." + triggerKey, new string[2] { "Value", "SetValue" }, count);
             }
             else
             {
diff --git a/Samples/MachineJob/Worker.cs b/Samples/MachineJob/Worker.cs
index 9009b17..ca32ecb 100644
--- a/Samples/MachineJob/Worker.cs
+++ b/Samples/MachineJob/Worker.cs
@@ -69,7 +69,7 @@ namespace MachineJob.Service
             //5. 不设置固定时间，连续触发Job
             foreach (var machine in machines)
             {
-                var scheduler = await MachineJobSchedulerCreator<IMachineMethodDatas, string, double>.CreateScheduler(machine.Id, 0, 0);
+                var scheduler = await MachineJobSchedulerCreator<IMachineMethodDatas, string, double>.CreateScheduler(machine.Id, -1, 0);
                 var job = scheduler.From(machine.Id + ".From", machine, MachineDataType.Name).Result.Query(machine.Id + ".ConsoleQuery", QueryConsole).Result.To(machine.Id + ".To", machine).Result.Deal(machine.Id + ".Deal", OnSuccess, OnFailure).Result;
                 await job.Run();
             }