Omron SYSDRIVE 3G3RV, User Manual

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6
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Length <l>
Set
the length of the data.
All
communications with the 3G3RV are performed in byte units. Select 1 Byte and BIN. Select No for read-
ing
data because there is no data to be read.
Address <a>
Set
the addresses of the Slaves.
In
this example, the Slave addresses are set in S + 2, S + 5, and S + 8. Therefore, retrieve the data from those
locations.
The
address is set in the LSB of each word. To read the byte, select Variable Reverse, otherwise the data is
read
from the MSB. Then click on Edit Variable with the left button of the mouse. Select Read R () and set
Data/Address
to the operand (3N + 2) using the number (N) of times to repeat the step.
Set
Edit Length to 1 byte as a default. If the default value has been changed, set it to 0N + 1.
Data
Set
the DSR message in detail.
•
DSR
Message Requesting that the RUN Command and Frequency Reference Be Written
The
DSR message to write data to two registers from register 0001 Hex (the RUN command) consists of
the
following items.
Fig 6.68 DSR Message to Write Data
a 10 00 01 00 02 l R 3N 3 4 c
a
The Slave address is set in the address box. Insert the address with the Insert icon.
10 00 01 00 02
Set the constants contained in the DSR message.
Use Set Constant and set the constants in Hex.
l
The length is set in the length box. Insert the length by using the Insert icon. The length is the number of bytes of the
succeeding data (R(3N +3), 4). The length is automatically set by the CX-Protocol.
(R(3N +3), 4)
The Inverter’s actual data to be sent. This example selects Variable and Read R() and sets the operand. Set Data to
3N + 3 because the RUN command data uses four bytes each from S + 3, S +6, and S + 9.
Set Edit Length to 0N + 4 so that it will be set to four bytes.
c
The check code is set in the check code box. Insert the check code by using the Insert icon. All the data including the
address data before the check code is operated. Mark all the items if the PST is used. The check code is automatically
set by the CX-Protocol.
1 0 0 0 0 1 0 0 0 2
Slave address (Set with <a>)
Function code (Write 10)
Write start register number (RUN command: 0001)
Number of write data registers: 2
Number of bytes of attached data (Set with <l>)
Start register data
Next register data
CRC-16 check (Set with <c>)
Set with variables
Set data