- 16 -
i) Data Section
Specifies the data to be written into the register. Data is four bytes (fixed).
If the data contains a decimal point, set the numeric value that ignores the decimal point.
Data that is enclosed in parentheses is the value that will be used in the actual message to be sent. See
Structure of MODBUS ASCII Request Message (Data Transmission from the Upper Computer to This Product)
”
for details.
■
In Case of Numerical Data
Contents of Communication
HEX Data
PV = 1200.0 (
℃
)
00002EE0h (2EE00000)
SV = -10.00(
℃
)
FFFFFC18h (FC18FFFF)
■
ASCII code will be written in case of the character data (□ means space).
Contents of Communication
HEX Data
Priority Screen 0-1 =
☐
INP
20494E50h (4E502049)
Priority Screen 0-2 =
☐☐
P1
20205031h (50312020)
j) Error Number
If there is an error in the message that was sent by the upper computer, the error number will be included in the
“
response message
”
of this product for the reply.
For multiple errors, the largest error number will be included.
Contents and classification of error are the following:
Error Number Description of errors in the
“
Request Message
”
that was received by this product
01
Received an unsupported function code
02
Received an unspecified address
03
Numerical value data is out of the
“
setting range that is specified individually by the setting
item
”
