2.1.1. TaskStart

The TaskStart statement creates a subtask, assigns a specific JOB program to the subtask, and starts the subtask program. TaskStart can also create a subtask in the main task or create another subtask in a subtask.

The format of the TaskStart statement is as follows. You can input the TaskStart command by selecting 『[F6]: Command input』→『F3: Others』→『TaskStart』 in sequence.

Item	Content
Subtask Number	Designate the task number to be created (1–7)
Program Number	Designate the program to be executed in a created subtask (1–9999)
Example of Use	TaskStart SUB=1,JOB=0010 (Execute by assigning 0010.JOB to subtask 1)

Figure 2.1 Example of the TaskStart Command Use

Figure 2.2 Example of creating a subtask and waiting for its termination

What requires attention is that the number of the subtask to be created is a different subtask number and not its own number of the current subtask. In addition, the TaskStart statement is inapplicable in the error situations described below, so it is necessary to take precaution.

Firstly, in a situation where the subtask created using TaskStart has been already created and in the middle of being executed and has not been completed, if the same program or another program is assigned to the same subtask as a subtask program, an error will occur. Please refer to the examples below.

Secondly, an error will also occur if the same program is assigned to multiple subtask programs simultaneously. Please refer to the examples below.

Thirdly, an error will occur when creating the main task program (JOB file currently being executed in the main task) as a subtask program. In other words, it is impossible to assign the same JOB file in the main task and subtask.

2.1.1. TaskStart​

2.1.1. TaskStart