Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 410 / 478

A Standard System Protocol
R-76
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
This sequence performs the following operations repeatedly: Instructs the Bar Code Reader to start
reading and receives the data read by the Bar Code Reader. The interrupt notification method is used
for the receive data and the interrupt No. is 100.
Send Data Word Allocation (3rd Operand of PMCR(260))
None.
Receive Data Word Allocation (4th Operand of PMCR(260))
The send data word allocation is similar to that of sequence No. 352 (Data Read).
Additional Information
• Since this sequence repeats itself within the sequence, once it is executed, it remains in the
execution state until cancelled.
• Even if execution is cancelled, the bar code still keeps reading. Execute sequence No. 351
(BCR Read Stop) to end the sequence.
• The reception wait time is not set for this sequence.
Precautions for Correct Use Precautions for Correct Use
• Sequences No. 361 and No. 364 (Continuous Data Read with Interrupt) are not supported by
the CS1W-SCU
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(-V1) and CJ1W-SCU
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(-V1) Serial Communications Units. A protocol
macro syntax error will occur if an attempt is made to execute either sequence with a Serial
Communications Unit.
This general-purpose command is used to send data with a specified data length, and receive back
only ACK. STX and ETX are automatically attached to the send data.
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260))
None.
Continuous Data Read (Interrupt) (V520) (Sequence No. 364 (Hex
016C))
General-purpose Command 1 (Sequence No. 365 (Hex 016D))
Offset Contents (data format) Data
+0 Number of send data words
(4 digits Hex) 0003 to 00FA (3 to 250 decimal)
+1 Send data byte length
(4 digits Hex) 0001 to 01F0 (1 to 496 decimal)
The byte length of the send data excluding STX and ETX.
+2 to
+249 Send data (ASCII) Describe send data up to 496 bytes (max.) by ASCII.
Send data
Send data
+0
+1
+2
+3
+248
+249
Number of send data words
First word of
send data
Send data
Send data
Send data byte length