Omron E5CC-T, Communications Manual

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6 - 21
6 Programless Communications
E5

C-T Digital Temperature Controllers Programmable Type Communications Manual (H186)
6-3 C
o
n
tr
o
lling
P
rogram
less Co
mm
u
n
ication
s
6
6-3-2 Response F
lag
The Response Flag changes as shown below for the values of the Request Flag.
* If a communications error prevents reading data for the Request Flag, the Response Flag will change to
eeee
.
*1 The Response Flag gives the number of the download setting where the error occurred. If more than one
error occurs, the smallest number is given first. When the error is cleared, the next error number is given.
Example: If errors occur for download settings 10 and 12, the Response Flag will be
e012
.
*2 An OR of 8000 and the operation command code is given. If a setting range error occurs at the same time,
indicating the operation command error will be given priority.
Example: If an error occurs for operation command code 1101, the Response Flag will be
9101
.

Precautions for AT (Auto-tuning)
Do not change the set values in the download area from the start of auto-tuning until auto-tuning is
completed or canceled. Programless communications cannot be used to change the set values of
the E5
@
C-T after auto-tuning starts. Also, if the Request Flag is set to 1 (Enable Writing) at the com-
pletion of auto-tuning, the set values in the download area are initialized to the set values from the
E5
@
C-T. This is to update the PID constants. (It occurs even if PID constants are not set in the
download area.) To prevent initialization, change the Request Flag to 0 (Disable Writing) after
auto-tuning starts. If you change the Request Flag to 1 (Enable Writing) after the completion of
auto-tuning, the values in PLC memory will be written to the E5
@
C-T. If you change the Request
Flag to 2 (Initialize Download Areas) after the completion of auto-tuning, the download area will be
initialized with the set values from the E5
@
C-T.
6-3-2 Response Flag
Request Flag
Response Flag
Normal Error
0: Disable Writing 0 *
eeee
1: Enable Writing 1
e001
to
e043
8000
or Operation Command Code
2: Initialize Download Areas 1
eeee
Response Flag at error Cause of error
eeee
There was no response or a communications error occurred when reading the download
area.
e001
to
e043
*1 • The write data is out of the setting range.
• The Communications Writing parameter is set to OFF.
8000 (hex) or Operation
Command Code *2 • The operation command code is incorrect.
• The current status of the E5
@
C-T prevents it from acknowledging the operation command.
• The Communications Writing parameter is set to OFF.