4. DESCRIPTION OF FRONT PANEL AND
CONNECTION OF HANDY TERMINAL
4.1 Front Panel
The communications connector in the front panel is used for
setting up parameters through the Handy Terminal. The alarm-1
and alarm-2 LEDs light up if an alarm occurs (those LEDs are
provided only when the output-2 is specified for alarm output (the
output-2 suffix code is T).)
Alarm indicator lamp
(for alarm 1)
Communication connector
Alarm indicator lamp
(for alarm 2)
4.2 Connector for Communication
Use the connector for communication when setting the
parameters using a PC (VJ77 Parameters Setting Tool) or the
Handy Terminal.
< How to connect with the setting tool>
JUXTA communication
cable with 5-pin
connector
Modular jack
conversion
adapter
Dedicated adapter
Dedicated cable
<How to connect with the setting tool>
JUXTA
VJ Series
PC with the
VJ77 installed
JHT200
Handy Terminal
• Use the VJ77 of version R2.02.01 or later.
•
The modular jack conversion adapter does not come with the
JHT200 Handy Terminal. It is sold separately.
5. SETTING PARAMETERS
Set the parameters using a PC (VJ77 Parameter Setting Tool) or
the Handy Terminal. Refer to “7. LIST OF PARAMETERS” in this
manual and the User’s Manual for VJ77 PC-based Parameters
Setting Tool (IM 77J01J77-01E) or the User’s Manual for JHT200
Handy Terminal (IM 77J50H01-01EN).
5.1 Settings Related to Inputs and Outputs
5.1.1 Input Type
Set by selecting input type from among VOLTS (DC voltage)
and CURRENT (DC current) in
[D12: INP TYPE]
.
5.1.2 Input Range
Set the 0% value of input range to
[D24: INPUT1 L_RNG]
and the 100% value of input range to
[D25: INPUT1 H_RNG]
within the numerically specified range.
NOTE
In case the input range is changed after factory-ship,
the instrument may not work within the rated accuracy
range depending on the changed input range. Perform
the adjustment following the maintenance of this
instruction manual after changing the input range.
5.1.3 Software Filter
Set the software filter in
[D57: S/W FILTER]
.
OFF, LOW, MIDDLE, HIGH (default value: OFF)
When LOW, MIDDLE, or HIGH is selected, a first-order filter
equivalent to 100 ms, 300 ms, or 1 s is inserted in the input.
5.1.4 Direction of Output Action
Analog output signals can be reversed. To reverse the signal
from output-1, set
[D50: OUT1 DR]
to REVERSE. For
output-2, set
[D51 OUT2 DR]
to REVERSE. To return the
output-1 signal to normal, set
[D50: OUT1 DR]
to DIRECT.
For output-2, set
[D51: OUT2 DR]
to DIRECT.
5.1.5
External Input Resistance Correction
For current input, set the external resistance to
[D13: IN
RESIST]
. There is a difference between this value and the
actual external resistance. If this difference causes an error,
the input can be corrected.
To perform correction, wire as shown in the figure below, apply
a stable input equivalent to 100%, and set
[P40:RESISTOR
ADJ]
to EXECUTE.
If you need perform correction again such as when the
external resistance is changed, reset the correct value. To do
so, set
[P40: RESISTOR ADJ]
to RESET.
A current
generator
VJH7
R
：
External resistor
R
1
3
5.2 Settings Related to Communication
Function
Set the following parameters when output-2 is specified
for communication function. For more information on the
communication function, see the Instruction Manual for VJ Series
Communication Function (IM 77J1J11-01E).
5.2.1 Communication Protocol
Set the communication protocol by selecting from among PC-
LINK, PC-LINK WITH SUM, MODBUS ASCII, MODBUS RTU,
and LADDER in
[F01: PROTOCOL]
.
5.2.2 Communication Address
Set the address number of the isolator numerically in a range
of 1 to 99 in
[F02: ADDRESS]
.
5.2.3 Baud Rate
Set the baud rate by selecting from among 1200, 2400, 4800,
9600, 19200 and 38400 bps in
[F03: BAUD RATE]
.
5.2.4 Parity
Select and set NONE, EVEN, or ODD in
[F04: PARITY]
.
5.2.5 Data Length
Select and set 7 bits or 8 bits in
[F05: DATA LEN]
.
5.2.6 Stop Bit
Select and set 1 bit or 2 bits in
[F06: STOP BIT]
.
5.2.7 Input Decimal Point Position
Number of digits of decimal places (setting of D register
[D0003]) can be set.
Select and set among 0 to 5 digits in
[F07: INPUT DEC PT]
.
5.3 Settings Related to Alarm Output
Set the following parameters when output-2 is specified for alarm
output.
5.3.1 Alarm Setpoints
Set the alarm setpoints of alarm-1 and alarm-2 in
[E03: SET
POINT1]
and
[E04: SET POINT2]
numerically.
•
Setting range: A range of 0 to 100% of input range
•
Setting resolution: 0.1%
5.3.2 Direction of Alarm Action
Select the direction of alarm-1 action and that of alarm-2
action from among HIGH ALM (high-limit alarm) and LOW
ALM (low-limit alarm) and set each in
[E05: ALM1 ACTION]
(direction of alarm-1 action) or
[E06: ALM2 ACTION]
(direction of alarm-2 action).
•
To activate alarm status when input signal ≥ alarm setpoint,
select HIGH ALM.
•
To activate alarm status when input signal ≤ alarm setpoint,
select LOW ALM.
3
IM 77J01H07-01E
5th Edition
