IM 77J04H31-01E 4th Edition
Oct. 15, 2019-00
8
Press the SET/ENT key to display parameter "MON."
Press the UP key to display "ON" on the DATA display.
Press the SET/ENT key to accept the data.
Press the SET/ENT key twice to display parameter "ZER."
Display parameter "MON" and press the DOWN key to
display "OFF" on the DATA display.
Press the SET/ENT key to accept the data.
Press the DOWN key to display "-0.20" on the DATA
display.
Then press the UP or DOWN key to make fine
adjustments.
Make adjustments to the maximum monitor output value
by displaying parameter "SPN".
The minimum output value
(1 V) is output forcibly.
The maximum output
value (5 V) is output
forcibly.
(Displays a correction value
corresponding to the error.)
Press to display
"-0.20."
Press or
to make fine adjustments.
Setup Parameter Screen 2
This establishes the setting in which
the monitor output adjustment
screen becomes visible.
This establishes the setting in which
the monitor output adjustment
screen becomes invisible.
This completes the process for
adjusting the minimum monitor
output value.
The MVHK enters the operable status as soon as the power is turned on, but requires 10 to 15 minutes
of warm-up to meet the performance requirements.
(Measured value [1.008 V]) - (Reference value [1 V])
Output span [4 V]
×
100 (%)
Error =
Follow the same procedure as above to adjust the maximum monitor
output value.
After adjusting the monitor output, set the MON parameter to "OFF" (making the adjustment
screen invisible).
When this parameter (ZER) is displayed, the MVHK forcibly outputs
the minimum monitor output value (0%), regardless of input.
The monitor output is corrected by -0.2% because the error is
+0.008 V (+0.2%).
Press to display
"MON."
Press to display
"ON."
Press .
Press to display
"ZER."
Press to display
"OFF."
Press .
13.1.5 Using the Forced Output Function
The use of the forced output function allows you to conduct operation tests for a device
connected to the monitor output terminals of the MVHK.
This subsection describes an example of forcing a value equivalent to 50% of the output
range (3 V) to output when the monitor output of the MVHK is “1 to 5 V DC.”
The procedure below begins with the condition in which parameter “MAN” is displayed
with the MON parameter set to “ON” in the Setup Parameter Screen 2.
Press the UP key to display "50.0" on the DATA display.
The minimum output value
(1 V) is output forcibly.
The value equivalent to
50% of the output range
(3 V) is output forcibly.
Setup Parameter Screen 2
When this parameter (MAN) is displayed, the MVHK forces
the monitor output value to be output, regardless of input.
3 V is output forcibly. The MVHK continues to output
while this parameter is displayed on the screen.
After completion of the forced output, return the MON parameter setting to "OFF" (making the
adjustment screen invisible).
Pressing causes
the output value to increase.
CAUTION
After performing monitor output adjustments or forced output, always set the MON
parameter to “OFF” (making the adjustment screen invisible). If the Setup Parameter
Screen 2 is switched while the MON parameter is set to “ON,” displaying parameter
“MAN,” “ZER” or “SPN” causes a value corresponding to the set value to be output
forcibly. Furthermore, if the power is turned off while parameter “MAN” is displayed, the
set values will be initialized.
13.2 Monitor Output (Communication)
Monitor output (communication) is added only when the monitor output code “P” is specified at the
time of order.
13.2.1 Setting Ranges and Factory-Set Values of Monitor Output (Communication)-Related
Parameters
Setup Parameter Screen 2
Parameter
Symbol
Parameter Name
Setting Range
Factory-Set
Value
Communication protocol
(PSL)
0: PC link
1: PC link with SUM
2: Ladder communication
3: MODBUS ASCII
4: MODBUS RTU
0
(PC link)
Communication address
(ADR)
1 to 99
1
Baud rate (BPS)
1.2 (0: 1200 bps)
2.4 (1: 2400 bps)
4.8 (2: 4800 bps)
9.6 (3: 9600 bps)
19.2 (4: 19200 bps)
38.4 (5: 38400 bps)
9.6
(9600 bps)
Parity (PRI)
NON (0: None)
EVN (1: Even)
ODD (2: Odd)
EVN
(Even)
Stop bit (STP)
1 or 2 (bits)
1
Data length (DLN)
7 or 8 (bits)
8
13.2.2 Setting the Communication-Related Parameters
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the
Setup Parameter Screen 1 appears.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the SET/ENT key to display parameter "PSL" for
setting the communication protocol.
Press the UP or DOWN key to display the communication
protocol number on the DATA display.
Press this key for
more than 3 sec.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Setup Parameter Screen 1
Setup Parameter Screen 2
Operation Parameter Screen
Power ON
This completes the process for
setting the communication protocol.
Parameter "PRI" for setting the parity
Parameter "STP" for setting the stop bit
Parameter "DLN" for setting the data length
Parameter "BPS" for setting the baud rate
Parameter "ADR" for setting the communication address
Follow the same procedure to set the following parameters:
Press to display
"LOC."
Press to display
"-1."
Press .
Press to display
"PSL."
Press or
to display the communication
protocol number to use.
Press .
Press .
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display the Setup Parameter
Screen 2.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
See Also
For more information on the communication functions, refer to the M Series Digital Limit
Alarms Communication Functions User’s Manual (IM 77J04J11-01E) sold separately.
14. TROUBLESHOOTING
Possible Errors Occurring at Power ON
The following describes possible errors occurring at power ON.
Error Indication
Description
of Error
Status
Remedy
PV
Display
Alarm
Indicator
Lamps
READY
Lamp
PV
Alarm
Output
Fail
output
Monitor Output
RS-485
Analog
Undefined Undefined Undefined
CPU
failure
Undefined Undefined Undefined Undefined Undefined
Failure.
Submit
request for us
to repair.
OFF
OFF
OFF
Power
failure
None
(0%)
OFF
De-
energized
Invalid
0% or less
OFF
Normal
EEP sum
error
None
(0%)
OFF
De-
energized
Invalid
0% or less
blinks
OFF
Blinks
RAM
error
None
(0%)
OFF
De-
energized
Invalid
0% or less
AL2
blinks
ROM
error
Possible Errors Occurring during Operations
The following describes errors that may occur during operations.
Error Indication
Description
of Error
Status
Remedy
PV
Display
Alarm
Indicator
Lamps
READY
Lamp
PV
Alarm
Output
Fail
output
Monitor Output
RS-485
Analog
blinks
AL1 lights
Normal
EEPROM
error
None
(0%)
OFF
De-
energized
Invalid
0% or ess
Failure.
Submit equest
for us to epair.
AL2 lights
AD
error
Normal
Normal
Input
exceeding
high limit
110%
of the
measured
range
Normal
Energized
Normal
106% or
more of
the output
range
Check input.
Normal
Normal
Input falling
below low
limit
−10%
of the
measured
range
Normal
Energized
Normal
−6% or
less of
the output
range
Check input.
Decimal
point
blinks
Normal
Normal Communication
error
Normal
Normal
Energized
Normal
Normal
Press any key,
or if normal
communication
is made, a
communication
error will be
cleared.
