Iai-america XSEL-QX Manuel d'utilisateur télécharger pdf (Page 305)

281

Part 4 Commands

z TMRW (Set READ/WRIT timeout value)

Command, declaration

Extension condition

(LD, A, O, AB, OB)

Input condition

(I/O, flag)

Command,

declaration

Operand 1 Operand 2

Output

(Output, flag)

Optional Optional TMRW

Read timer

setting

(Write timer

setting)

[Function] Set a timeout value used with a READ/WRIT command.

The timer setting specified in operand 1 will set the maximum time the program will wait for

the character string read to end when a READ command is executed.

If the end character could not be read before the timer is up during the execution of the

READ command, a timeout will occur and the program will move to the next step.

(Whether or not a timeout has occurred can be checked from the return code (variable 99

based on the factory setting) that will be stored in a local variable immediately after the

READ command is executed.)

Setting the timer to “0” will allow the READ command to wait infinitely, without timeout, until

the end character is read.

The timer setting is input in seconds (setting range: 0 to 99.00 seconds) including up to two

decimal places.

A variable can be specified indirectly in operand 1.

(Note) TMRW is set to “0” in the default condition before TMRW setting is performed.

[Example] SCHA 10 Set LF (=10) as the end character.

TMRW 30 Set the READ timeout value to 30 seconds.

OPEN 1 Open channel 1.

READ 1 2 Read the character string from channel 1 to column 2

until LF is read.

TRAN 1 99 Assign the return code to variable 1.

CLOS 1 Close the channel.

Read completes successfully within 30 seconds o Variable No. 1 = 0

Timeout occurs o Variable No. 1 = 1

* The return code of READ command may not be limited to 0 or 1. The variable to

store the return code can be set in “Other parameter No. 24”. Refer to the

explanation of READ command for details.

The timer setting specified in operand 2 sets the timeout value (maximum time to wait

for completion of send) to be applied when a WRIT command is executed (= maximum

time to wait for send based on flow control).

The WRIT timer setting is effective only for standard SIOs (channel 1 or 2 supporting

flow control).

The timer setting specified in operand 2 sets the timeout value (maximum time to wait

for completion of send) to be applied when a WRIT command is executed (= maximum

time to wait for send based on flow control) (arbitrary).

The WRIT timer setting is effective only for standard SIOs (channel 1 or 2 supporting

flow control).

TMRD used in the X-SEL-JX/KX type controller is treated as TMRW in the X-SEL-

PX/QX type controller. If a program file created for an X-SEL-JX/KX controller is

transferred to an X-SEL-PX/QX controller, the PC software will automatically convert

“TMRD” to “TMRW” before the file is transferred.

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Iai-america XSEL-QX Manuel d'utilisateur Page 305

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