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6 Programless Communications
E5@C Digital Temperature Controllers Communications Manual (H175)
6-3 C
o
n
trollin
g Prog
ramless
Com
m
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 largest number is given first. When the error is cleared, the next error number is given.
Writing the remaining data is continued even if an error occurs during communications.
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 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. This is to update the PID constants. (It occurs even if PID constants are not set in the down-
load 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. 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.
Precautions for ST (Self-tuning)
If you use self-tuning and set PID constants in the download area, always leave the Request Flag
set to 1 (Enable Writing).* If you change the Request Flag from 0 (Disable Writing) to 1 (Enable Writ-
ing) during operation, the PID constants that were found with self-tuning will be overwritten with the
values from PLC memory.
*
You can change the Request Flag to 2 (Initialize Download Areas) at the start of programless communications.
6-3-2
Response Flag
Request Flag
Response Flag
Normal
Error
0: Disable Writing
0 *
eeee
1: Enable Writing
1
e001
to
e013
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
e013
*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 prevents it from acknowledging the operation command.
•
The Communications Writing parameter is set to OFF.
Содержание E5AC
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Страница 54: ...2 CompoWay F Communications Procedures 2 22 E5 C Digital Temperature Controllers Communications Manual H175...
Страница 96: ...4 Modbus Communications Procedure 4 16 E5 C Digital Temperature Controllers Communications Manual H175...
Страница 114: ...5 Communications Data for Modbus 5 18 E5 C Digital Temperature Controllers Communications Manual H175...
Страница 206: ...6 Programless Communications 6 92 E5 C Digital Temperature Controllers Communications Manual H175...
Страница 214: ...7 Component Communications 7 8 E5 C Digital Temperature Controllers Communications Manual H175...
Страница 219: ...I 1 E5 C Digital Temperature Controllers Communications Manual H175 I Index...
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