Omron CJ1W-C113 - REV 02-2008, Operation Manual

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Writing Data with the WRITE DATA Bit Section 5-2
5-2-4 Timing Chart for Writing Data
Writing data is possible even during axis operation.
It is not possible to write data and read data at the same time.
The following diagram is a timing chart for writing data to a 4-axis PCU.
When the data writing operation is completed, the Data Transferring Flag
(word n+8, bit 14) is turned from ON to OFF. If an error occurs during data
transfer, the Error Flag (word n+8, bit 12) is turned ON and the error code is
output to n+10 in the operating memory area. Check this error code to deter-
mine the cause of the error and correct it.
5-2-5 Example of a Write Data Program
A sample program is given below for writing the following speed data to the
PCU. The PCU to be used will be a NC413 designated unit number 0.
Allocation of Areas The common parameter area is from D20000 to D20002.
The operating memory area is from CIO 2000 to CIO 2019.
The beginning word of the operating data area is D00400.
Speeds to be Transferred The beginning word address for the data transfer area is D00500, and the
data to be sent is as follows:
Number of write words (l)
Write source area (l+1)
Write source word (l+2)
Write destination address (l+3)
WRITE DATA (n+1, 12)
Data Transferring Flag (n+8, 14)
(9 words)
(Word 100)
Data Address (transfer
destination)
DM (transfer source) Setting
Speed #0 112C
112D 00500
00501 03E8
0000 (1,000 pps)
Speed #1 112E
112F 00502
00503 157C
0000 (5,500 pps)