Omron E5ZD, Руководство по эксплуатации

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71
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.
4-1-3 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 detail of response formats are
described on page 76.
Error code Name Meaning
E001 Memory error The memory contents have been destroyed. Turn the E5ZD off and on.
E002 Sensor input AD er-
ror The sensor AD converter has failed. Turn the E5ZD off and on.
E003 Cold junction com-
pensation error This error is generated when CN3 has been disconnected or the ambient tempera-
ture of the E5ZD has dropped below –15
°
C or exceeded 60
°
C.
E004 CT input AD error The CT input AD converter has failed.
E011 Sensor error The sensor input is not correct. Either the sensor is shorted or not wired correctly.
E012 Upper limit error The measured temperature is 20
°
C or more over the set temperature range.
E013 Lower limit error The measured temperature is 20
°
C or more below the set temperature range.
E022 Heater current up-
per limit error The measured heater current value is more than 55 A.
4-2 Temperature Control Commands (All Controllers)
The commands described in this section are used to write or read parameters
used in temperature control, or to otherwise exert temperature control.
4-2-1 Set Temperature Write: WS
This command is used to write the set values for temperature control into
memory. The command must designate the unit, memory bank, and point where
the set temperature is to be written. The length of the data for the set tempera-
ture is either four for five digits depending on whether the value is input to the
nearest degree or to the nearest one-tenth of a degree (see below).
It designates only the set temperatures, not the current memory bank, which is
specified using Memory Bank Designation Write (WM).
Note Set Temperature Write cannot be used during autotuning.
Command Format The formats for this command are as shown below.
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 set temperature is input in four digits (or three numeric digits with a sign
digit) with increments of one degree. Use 2D
hex
as the negative sign.
@ 0 Unit W S Bank Point 0 0 CR
x10
3
x10
2
x10
1
x10
0
Sign (0 or –)
*
Header code
Data code Terminator
Set temperature FCS
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
Temperature Control Commands (All Controllers)
Section 4-2