Omron E5AC, Communications Manual

Page: 42 / 224

2 CompoWay/F Communications Procedures
2 - 10
E5@C Digital Temperature Controllers Communications Manual (H175)
(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).
(5) Precautions
• Alarm Function
Even though alarms are not displayed on the Controller's display, they function normally in
communications.
This service reads in order the contents of specified addresses in the variable area.
• Service Request PDU
• Service Response PDU
Note: The read data is read together with the variable type in the order specified by the command.
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.
1103 Start address out-of-range error Write start address is out of range.
1104
End address out-of-range error The write end address (write start a
number of elements) exceeds the final address of
the variable area.
1003
Number of elements/data
mismatch The number of data does not match the number of
elements.
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
2-3-3 Composite Read from Variable Area
MRC SRC
0 1 0 4 0 0
2 2 2 2 4
0 0
2 2 4
Variable
type
Read
address
Bit
position
Variable
type
Read
address
Bit
position
2 2
MRC SRC
0 1 0 4
4
2
2
Variable
type
Response
code
Variable
type
Read data
Number of elements
×
8 or 4
Read data
Number of elements
×
8 or 4