Omron E5ZD, Руководство по эксплуатации

Страница: 83 / 157

73
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 desired data will not have been written.
Refer to
Section 4-1-2 End Codes for a description of the other possible end
codes and their meanings.
For Set Temperature Write, end code 14 and 15 may result from improper switch
settings, i.e., the required number of digits and the smallest increment for the set
temperature data differ depending on the model and the set temperature range.
4-2-2 Set Temperature Read: RS
This command is used to read the set temperatures that are held in the memory
banks. It is necessary to designate the unit, point, and bank of the desired set
temperature.
Command Format The format for this command is as shown below.
@ 0 Unit R S Bank Point 0 0 CR @ 0 Unit R S Bank Point 0 0 CR
Header code
*
Terminator
Data code
FCS
*
Terminator
Command Examples The following command is used to read the set value stored in memory bank 2 of
control point 0 in unit 1.
*
@ 0 1 R S 2 0 0 0 4 2 CR
Response Format The responses returned for this command are shown below. The response used
depends on the smallest increment of the set temperature (see below). These
responses 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 set
value will not have been returned and the end code will be followed immediately
by the FCS. If the header code in the command block was not recognizable, 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 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 returned in four digits (or three numeric digits with a
sign digit) in increments of one degree. 2D
hex
is used as the negative sign.
@ 0 Unit R S CR
Header code
FCS
x10
3
x10
2
x10
1
x10
0
Sign (0 or –)
*
Terminator
Set temperature End code
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
set temperature is returned in five digits (i.e., a sign digit plus four numeric digits)
Temperature Control Commands (All Controllers)
Section 4-2