7.6 Writing to the variable area
7-13
Communication
(Modbus)
Response codes
◆ Writing non-display data
It is possible to write to setting data even if it is set to non-display or is not displayed due to the
model; however, exercise caution when writing continuously.
Command/response example
Writing to "SP setting upper limit" and "SP setting lower limit" of control
initial setting level of channel 1. (Client address: H'01)
SP setting upper limit of channel 1
Address : H'0D1E
Data written : H'00002710 (1000.0°C)
SP setting lower limit of channel 1
Address : H'0D20
Data written : H'FFFFFC18 (-100.0°C)
Function
code
Error
code
Error name Cause
H'90
H'02 Variable address error Error in leading variable address of write
H'03 Variable data error
◆ Number of elements and number of data
items do not agree.
◆ Number of elements × 2 does not agree with
byte count.
◆ Write data exceeds the setting range.
H'04 Operation error
The operation state does not permit writing.
The settings for the write data are not permit-
ted in the current operation mode.
◆ Write via communication is OFF (disabled).
◆ Attempted to write to setting data of setting
area 1 from setting area 0.
◆ Attempted to write to protect setting data
from other than protect level.
◆ AT is running.
◆ User calibration in progress.
Unit error, unit change, display unit error, non-
volatile memory error
H'10 − Normal end No error
Command:
Response:
01
01 10
10
0D 1E
0D 1E
00 04
00 04
08
00 00 27 10
FF FF FC 18
(CRC-16)
(CRC-16)
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