
3. PERIPHERAL EQUIPMENT CONTROL
B--65245EN/02
HANDLING
100
At present, response data cannot be read for a purpose other than display
during operation such as movement on axes.
This function allows the host to read correct response data from a servo
amplifier unit even during movement on axes by establishing
synchronization between the host and servo amplifier unit with the
response data read function of the host. Data that can be read includes
ATC data, point numbers, and motor current values as well as coordinates.
For synchronization establishment, the following two bits are added onto
the I/O Link:
ABSWT (Xx+1#0): Response data write completion signal
ABSRD (Yy+1#4): Response data read completion signal
[Details of processing]
When the logic levels of ABSWT and ABSRD are equal (ABSWT =
ABSRD = 0 or ABSWT = ABSRD = 1), the servo amplifier unit writes
response data to Xx+3 to Xx+6, and inverts the logic level of ABSWT.
When the logic levels of ABSWT and ABSRD are not equal (ABSWT =
0 and ABSRD = 1, or AB SWT = 1 and ABSRD = 0), the host takes in
response data from Xx+3 to Xx+6, and inverts the logic level of ABSRD.
[Timing chart]
H: Processing by the host
ϒ: Processing by the servo amplifier unit
ϒ: Response data
check signal
(Xx+2#4 to #5)
ϒ: Response
data write
(Xx+3toXx+6)
H: Response
data read
(Xx+3toXx+6)
ABSRD 1
(Yy+1#4 ) 0
ABSWT 1
(Xx+1#0 ) 0
3.8
UPGRADING OF THE
RESPONSE DATA
READ FUNCTION
3.8.1
Overview
3.8.2
Details of Function