Omron E5AC, Communications Manual

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2 CompoWay/F Communications Procedures
E5@C Digital Temperature Controllers Communications Manual (H175)
2-3 De
tailed
Descrip
tion
of
the
Ser
vices
2
2-
3-5 R
ead Contr
oller
Attributes
(4) Response Code
• Normal Completion
• Error Occurred
* For details on AT (auto-tuning), refer to the
E5
@
C Digital Temperature Controllers User's Manual
(Cat. No.
H174).
This service reads the model number and communications buffer size.
• Service Request PDU
• Service Response PDU
(1) Model Number
The model number is expressed in 10-byte ASCII.
Example: The model is given as shown below for the E5CC-RX2ASM-000
(relay output, 2 auxiliary outputs, and no options).
(2) Buffer Size
The communications buffer size is expressed in 2-byte hexadecimal, and read after being converted
to 4-byte ASCII.
Buffer size: 217 bytes (= H'00D9)
Response code Name Description
0000 Normal completion No errors were found.
Response code Error name Cause
1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
1100
Parameter error • Bit position is not “00.”
• The write data is out of the setting range.
3003 Read-only error Variable type “C0” was written to.
2203
Operation error • The Communications Writing parameter is set to “OFF”
(disabled).
• 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 (auto-tuning) was in progress. *
• Non-volatile memory error
2-3-5 Read Controller Attributes
MRC SRC
0 5 0 3
2 2
MRC SRC
0 5 0 3
2 10 2 4 4
0 0 D 9
Response
code
Model No. Buffer size
- 5 C C R S E 2 A X