Omron E5ZD, Руководство по эксплуатации

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47
Dealing with Unused Points When there are unused input terminals, do not leave them open, either for ther-
mocouple inputs or platinum resistance thermometer inputs. Leaving them open
will cause a malfunction. Instead, deal with them as follows:
Thermocouple inputs Short-circuit the plus and minus terminals for the same point. The measured
temperature then becomes the temperature for the Terminal Block.
Connect a resistance of 100
Ω
to 177
Ω
(within the temperature range set by the
switches) between the A and B terminals of the same point. Short-circuit be-
tween the B terminals. The measured temperature will then correspond to the
resistance.
2-3-9 Communications Interfaces
E5ZD-8H
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M-E specifications for the communications interfaces are the
same as those for 4- and 6-point controllers. Return to 2-1-4 Communications
Interfaces for the specifications.
2-3-10 Switch Settings
For the following switch settings to be effective, they must be made with the pow-
er to the E5ZD turned OFF, i.e., the switch status is read only when the power is
turned ON.
Unit Number: SW303 Each E5ZD-8H
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M-E Temperature Controller is assigned a unit number to en-
able easy identification of the Units during communications with the host com-
puter. The unit number (between 0 and F) is set using SW303. When multiple
E5ZDs are connected to the same host computer, the same unit number must
not be set for more than one E5ZD. The unit number is set to 0 at the factory.
Baud Rate: SW501 The baud rate determines the transmission speed for communications with the
host computer. The host computer must be set to the same baud rate as the
E5ZD for communications to be possible. Set SW501 to between 0 and 6 to set
the baud rate according to the following table. Do not set SW501 to between 7
and 9.
SW3 setting 0 1 2 3 4 5 6 7 to 9
Baud rate 150 300 600 1,200 2,400 4,800 9,600 Not allowed.
Set these pins to establish the type of sensor and the temperature range to be
used. Pins 4 to 9 are not used, so leave them OFF. All pins are set to 0 at the
factory, so the K setting will be 0
°
C to 400
°
C for thermocouple specifications,
and the Pt100 setting will be -100.0
°
C to 200.0
°
C for platinum resistance ther-
mometer specifications. The Celsius/Fahrenheit setting is made on SW503.
Pin 0 1 2 3
Sensor type K J
°
C 0
°
to 400
°
C 0
°
to 600
°
C 0
°
to 400
°
C 0
°
to 600
°
C
°
F 32
°
to 752
°
F 32
°
to 1112
°
F 32
°
to 752
°
F 32
°
to 1112
°
F
Pin 0 1 2 3
Sensor type Pt100 JPt100
°
C –100.0
°
to
200.0
°
C
0
°
to 500
°
C –100.0
°
to
200.0
°
C
0
°
to 500
°
C
°
F –148.0
°
to
392.0
°
F
32
°
to 932
°
F –148.0
°
to
392.0
°
F
32
°
to 932
°
F
Platinum Resistance
Thermometer Inputs
Sensor Specifications:
SW502
E5ZD-8H
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KJM-E
E5ZD-8H
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PM-E
E5ZD-8H
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M-E Hardware
Section 2-3