Omron E5ZD, Руководство по эксплуатации

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Error Codes If an error has occurred that makes temperature measuring impossible, Mea-
sured Temperature Read will result in a response that contains an error code
that indicates what type of error has occurred. The response formats are shown
below, and the error codes are described on
4-1-3 Error Codes .
The following format is used with K or J sensors or when the temperature range
for Pt100 or JPt100 sensors is between 0
°
and 500
°
C (32
°
to 932
°
F). In either
case, the error code is returned in four digits.
@ 0 Unit R X CR
FCS FCS FCS Error code End code
Header code
Terminator
*
The following format is used with Pt100 or JPt100 sensors when the tempera-
ture range is between –100.0
°
and 200.0
°
C (–148
°
to 392
°
F). In this case, the
error code is returned in four digits preceded by a space.
Header code
FCS FCS
Terminator
@ 0 Unit R X CR
*
FCS
Space (20 hex)
Error code End code
End Codes If an end code of 00 was returned in the response, the command was executed
normally. If the end code is not 00, the measured temperature will not have been
read. Refer to
Section 4-1-2 End Codes for a description of the other possible
end codes and their meanings.
4-2-4 Writing PID Constant and the Control Period
This section covers four commands: Proportional Band Write, Integral Time
Write, Derivative Time Write, and Control Period Write. The command and re-
sponse formats for these are nearly the same, however the numeric values for
data do vary. Make sure that values are within the ranges given below.
Command Format The formats for these commands and the limits for numeric data are given be-
low. All of these commands require the unit number, control point, and memory
bank for which the write is intended. All require the four-digit data for the constant
to be preceded by two zeros.
Proportional Band Write: WB
The proportional band is input between 000.0
°
and 999.9
°
C. The setting of SW5
determines whether the value is in Celsius or Fahrenheit. The decimal point is
assumed and does not need to be entered; be sure to consider it when inputting.
If all zeros is input, ON-OFF control will be used.
Header code
@ 0 Unit W B Bank Point 0 0 CR
0000 to 9999
*
Data code Terminator
FCS Proportional band
Decimal point
Unit: 0.1
°
C/
°
F
Temperature Control Commands (All Controllers)
Section 4-2