4-9
1.
TNU functions
4. TNU functions
TNU
No.
Input
Output
Status
Remarks
(1)
Lower-level
communication
authorization switch
Current value
monitoring
(W1 to W2)
-
TNU / driver
controller
communication start
(2)
Servo on
(SVON)
-
Servo on
(3)
-
Servo on completed
(SVRDY)
Servo on
During origin return
(4)
Origin return
command (HOME)
Moving (MOVE)
(5)
STEP No. designation
(program number)
&
DVC data input (A)
-
During origin return
(6)
-
Origin return
completed (HEND)
(7)
Write switch ON
-
-
-
(8)
DVC switch
or
DVC switch
Moving (MOVE)
Positioning operation
is going on
DVC switch or
Turn DVC switch ON
(9)
-
Write success flag
ON
-
(10)
-
Positioning
completed (INPS)
&
end position display
(P00 to P05)
-
(11)
Write switch OFF
-
-
(12)
Write switch ON
Write success flag
OFF
(13)
Write success flag
ON
Precautions
◦
For DVC write, the EEPROM of the controller used will be ATMEL's "AT24V256C-SSHL". Note that
the upper limit of the write count is approximately 100,000 times.
◦
Because the write switch operates after detecting startup, when writing again, it must be turned OFF
and then ON again.
◦
When writing to vacant STEP No. of the driver controller, initial values will be written to areas without
value input from the DVC.
◦
When using DVC functions with driver controller function mode 1 (external unit input instruction type),
turn OFF the input signals No.7 (JOG/INCHING) and No.8 (JOG P) in the buffer memory allocation
correspondence table.
◦
It is possible to change positioning position by changing RWw positioning data while the actuator is
operating (before positioning completion), but if a positioning position in which motor rotation direction
will be reversed is designated, alarms may activate or unforeseen operation occur. For operations
in which the motor rotation direction will be reversed, make sure to change values after positioning
completion.
◦
If the “DVC switch” is turned ON at servo off or incomplete return to origin, alarms will activate for
servo off movement command or incomplete return to origin operation command. Carry out servo on /
return to origin with the “DVC switch” OFF.
◦
The DVC functions support absolute position only. Relative position is not supported.
◦
When using DVC functions, set one of types 0, 1, 2, or 3 for the driver controller function mode.
Types 4 and 5 are not supported.
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