IAI PSEL, Operation Manual

Page: 910 / 1062

[18] Communication
416
z
WRIT (Write)
Command, declaration Extension
condition
LD,A,O,AB,OB
Input condition
(I/O, flag)
Command,
declaration
Operand 1 Operand 2
Output
(Output, flag)
E N, Cnd Cmnd Operand 1 Operand 2 Pst
Optional Optional WRIT
Channel
number
Column
number
CC
(Note 1)
Applicable models
All models [Refer to Section 5.1 for details of models]
{
[Function] Write the character string in the column specified in operand 2 to the channel
specified in operand 1.
The operation will end when the character specified by a SCHA command is
written.
Either a local or global column can be specified.
[Example] SCHA 10 Set LF (= 10) as the end character.
OPEN 1 Open channel 1.
WRIT 1 2 Write the character string in column 2 to channel
1 until LF is written.
CLOS 1 Close the channel.
With a standard SIO (channel 1 or 2), WRIT is supported by (can be sent in)
a task other than the one that opened the channel, as long as the channel is
currently open. Accordingly, by sending WRIT in other task after executing
READ in a task that opened the channel, a response can be received from
the other side without delay after sending from XSEL.
(Note 1) CP is performed if the channel is other than 1 and 2.
Return code of WRIT command (channels 1 and 2 only)
The return code is stored in a local variable. The variable number can be set by “Other
parameter No. 24”. The default variable number is 99.
0
: WRIT completed successfully
1 : WRIT timeout (the timeout value is set by a TMRW command)
2 : WRIT timer cancelled (the wait status is cancelled by a TIMC command)
3 to 4 : Reserved by the system
5
: WRIT factor error (program abort error) (Cannot be recognized by SEL commands)
6 : WRIT task ended (program end request, etc.) (Cannot be recognized by SEL
commands)