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4 Modbus Communications Procedure
(3) Response Code
• Normal Completion
Function code
'
H
06
• Error Occurred
Function code
'
H
86
Note:
(4)
Example Command and Response
The following example shows the command/response for a Stop command. (In this case,
the slave address is H'01.)
Stop command (command code: 01; related information: 01)
• Address: H'0000 (fixed)
Write data: H'0101 (Run/Stop, Stop command)
Command:
Response:
(5) Operation Commands and Precautions
This information is the same as that for CompoWay/F. Refer to page 2-17.
4 - 14
Error code
---
Normal
completion
Error
Name
code
'
Variable
H
02
address error
'
Variable data
H
03
error
'
Operation
H
04
error
For details on variable writing, refer to4-4-2 Variable Write, Multiple. For details on AT,
@
refer to the E5
D Digital Temperature Controllers User's Manual Basic Type (Cat. No.
H224).
01
06
00 00
01 01
49 9A(CRC-16)
01
06
00 00
01 01
49 9A(CRC-16)
E5@D Digital Temperature Controllers Communications Manual (H225)
Name
Description
No errors were found.
Description
The write variable address is incorrect.
The write data is incorrect.
• The write data is out of the setting range.
• Command code or related information are
incorrect.
The Controller cannot write the data in its
present operating status.
• The Communications Writing parameter is set
to "OFF" (disabled). The command is received
regardless of the Communications Writing
parameter setting (ON/OFF).
• Attempted to write to a parameter in setup
area 1 from setup area 0.
• Attempted to write to a protect parameter from
other than the protect level.
• AT execution is in progress.
• Automatic filter adjustment is in progress.
• The command cannot be processed. For
details, refer to (5) Operation Commands and
Precautions following this table.
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