Instruction manual

7. DATA CONFIGURATION
IMCB14-E1
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Data whose decimal point's presence and/or position depends on input
range
The position of the decimal point changes depending on the input range type because the Modbus
protocol does not recognize data with decimal points during communication.
The following data can have one of three decimal point positions:
z
No decimal point
z
One decimal place
z
Two decimal places
The input range for voltage/current input is fixed at 0.0 to 100.0%. For details, see Input Range
Table 2 on P.34.
Measured value (PV) Heat-side proportional band
Set value (SV) Deadband
Alarm 1 set value PV bias
Alarm 2 set value
Example: When the temperature set value is -20.0 qC; -20.0 is processed as -200,
-200 = 0000H - 00C8H = FF38H
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Set value (SV) High FFH
Low 38H
7.2 Data Processing Precautions
z
For 03H (data read from the holding register), an error response message is returned when any
address other than 0000H to 0019H is specified as the starting number.
z
For 06H (data write to the single holding register), an error response message is returned when
data is written to any address other than 0000H to 0019H.
z
Read data of unused channel and undefined address is 0.
z
Any attempt to write to an unused channel is not processed as an error. Data can not be written
into an unused channel.
z
If data range or address error occurs during data writing, the data written before error is in effect.