Yokogawa Removable Chassis DX1000N - Manual (Page 245)

6-19
IM 04L41B01-17E
Specifications
1
2
3
4
5
6
App
Index
Item Description
Simultaneous access • Batch numbers and lot numbers can be written using one command for
each batch.
Example 1: On models without the multi batch function (/BT2 option), you
can write to registers 407833 to 407851 using one command.
Example 2: For batch group 1, you can write to registers 410001 to
410020 using one command.
Example 3: To set the batch number of batch group 1 to "ABCD" (see the
explanation for "Data type STRnn" for details), you can write
registers 410001 to 410005 using one command.
• You cannot simultaneously access batch numbers or lot numbers across
multiple batch groups.
• When reading, you can access the following registers simultaneously.
• Internal switches 1 to 30
• Memory start/stop for batches 1 to 12
• Event level switches 1 to 30
When the Data Type in a Command Differs from the DX Data Type
Every DX data value has a set data type.
If you access the DX using the same data type, all of the data, including special data,
are sent to the DX without any change. If you access the DX using a data type that is
different from the DX data type, the data type is converted. For details on the conversion
rules, see “Communication Considerations” in the DX1000/DX1000N/DX2000 EtherNet/
IP Communication Interface User’s Manual (IM04L41B01-18E).
Modbus Error Response (Common to Modbus server and Modbus slave)
The DX returns the following error codes to a client or master device.
Code Error Description
1 ILLEGAL FUNCTION
Invalid function code
An attempt was made to execute a function that is not
supported.
2 ILLEGAL DATA ADDRESS
Invalid register number
Failed to access the register.
3 ILLEGAL DATA VALUE
Invalid number of registers
When reading, the specified number of registers was less
than or equal to zero or greater than or equal to 126.
When writing, the specified number of registers was less
than or equal to zero or greater than or equal to 124.
7 NEGATIVE
ACKNOWLEDGE
Invalid contents written
• A lot number that is outside the valid range was
entered.
• Invalid characters (such as ‘¥x1b’) were written in
batch number or free message registers.
• Failed to control the following operations.
• Writing messages
• Writing free messages
• Writing batch numbers and lot numbers
However, no response is returned for the following errors.
• CRC error
• Errors other than those shown above
6.3 Modbus Protocol Specifications