3.7.1 call

Description

There is no significant difference in format between the main program and the subprogram in HRScript. The first job executed by the start button or by a signal is the main program, and all other jobs called by the call statement are subprograms.

Syntax

call <job number or file name> [,parameter 1,parameter 2,…]

Specify the job number of the job file name (excluding the extension) after the call statement. Then, while program A is being executed, if call B is encountered, A’s execution will be stopped, and the first statement of program B, a subprogram, will continue to be executed. If the end statement is encountered while B is being executed, program A’s execution will continue upon returning to the position of the next statement of program A’s call statement that was previously called.

Example

The following shows an example and the result of a subprogram called by a call statement. It seems meaningless to divide the program into two because the subprogram must handle only one print statement. However, a more practical example will be shown later.

0001.job	print "main job start" call 102_err print "main job end" end
0102_err.job	print "sub-program" end
Result	main job start sub-program main job end