Omron E5ZD, Руководство по эксплуатации

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Response Formats The responses returned for these commands are shown below. These re-
sponses assume that the header code in the command block was transmitted
and read normally and that the end code is 00. If the end code is not 00, the de-
sired value will not have been returned and the end code will be followed imme-
diately by the FCS. If the header code in the command block was not recogniz-
able, a header code of IC will be returned without an end code (see
Section 4-1-2
End Codes for the IC header code response format).
The proportional band will be 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 is not returned in the response; be sure to take this into consider-
ation when reading.
The integral and derivative times will be in seconds with values between 0000
and 3999. The control period is also in seconds, but can take a value between
0001 and 0099.
@ 0 Unit R CR
Header code
Terminator
*
B: For proportional band
N: For integral time
V: For derivative time
T: For control period
End code FCS
Set value
Response Examples This response shows that a proportional band of 50.3
°
C is set in memory bank 3
for control point 2 of unit 1.
*
@ 0 1 R B 0 0 0 5 0 3 5 7 CR
50. 3
°
C
End Codes If an end code of 00 was returned in the response, the command was executed
normally. If an end code other then 00 is returned, the desired value will not have
been read. Refer to
Section 4-1-2 End Codes for a description of the other possi-
ble end codes and their meanings.
4-2-6 Controlling Operation
This section covers two commands: Operation Start, and Operation Stop.
These commands are used to start PID operation unless PID operation has not
been set (i.e., when the proportional band is set to 0000). If PID operation has
not been set, these commands simply start and stop E5ZD operation.
If Operation Start is sent during autotuning, an error will be generated and end
code 01 will be returned. Operation Stop can be used to stop operation during
autotuning. Operation Start will be ignored if the Unit is already operating.
Note Operation Start cannot be used during autotuning.
Command Formats The formats for these commands are as shown below. Both of these commands
require specification of the control point and the unit number to be started or
stopped.
Temperature Control Commands (All Controllers)
Section 4-2