Mitsubishi Electric MELSEC iQ-R Series User Manual page 47

Synchronous encoder via link device [RD77GF]
■Setting method
Used to operate an incremental synchronous encoder that is connected to the high-speed counter module on the CC-Link IE
Field Network as a synchronous encoder axis.
By setting "301: Synchronous encoder via link device" in "[Pr.320] Synchronous encoder axis type", the link device assigned
to the synchronous encoder input axis can be used by the link device external signal assignment function.
The status is set to the counter disable just after a link is established. The synchronous encoder axis position value and the
synchronous encoder axis position value per cycle are restored based on the link device value assigned to the synchronous
encoder input axis. Therefore, connection becomes valid.
The synchronous encoder axis is controlled based on the amount of change of the link device value assigned to the
synchronous encoder input axis while it is connecting.
■Setting example
The following shows an example for setting a synchronous encoder via link device as synchronous encoder axis 4 of the
Simple Motion module.
• Assign the link device to the synchronous encoder input using the link device external signal assignment function.
• Set "301: Synchronous encoder via link device" in "[Pr.320] Synchronous encoder axis type" of synchronous encoder axis
4.
RD77GF
RD77GF4
RUN ERR
AX1-4
D LINK
SD/RD
L ERR
L ER
LINK
The following shows an example for operating CH1 of the high-speed counter module (NZ2GFCF-D62PD2) as the ring
counter to use as synchronous encoder input. For the specification and usage methods of the high-speed counter module,
refer to the following manual.
CC-Link IE Field Network High-Speed Counter Module User's Manual
Setting item
[Pr.710] Synchronous encoder axis: Link device type
[Pr.711] Synchronous encoder axis: Link device start No.
[Pr.712] Synchronous encoder axis: Link device count direction
setting
[Pr.713] Synchronous encoder axis: Ring counter maximum value
[Pr.714] Synchronous encoder axis: Ring counter minimum value
Axis 1 Axis 2
Setting Setting details
value
0033H Specify the remote register RWr10 (2 words) which stores the "current
value" of the counter module.
0010H
0 The encoder current value moves toward the positive direction by the
count-up pulse.
360000 Set the upper limit of the ring counter to 360000.
(Set the value to match with the setting value of RWw12 to RWw13.)
0 Set the lower limit of the ring counter to 0.
(Set the value to match with the setting value of RWw10 to RWw11.)
High-speed counter module
Axis 3
Incremental synchronous encoder
Synchronous encoder axis 2
2 INPUT AXIS MODULE
2.2 Synchronous Encoder Axis
2
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