NSD ABSOCODER NCW-3DNECMP Specifications & Instruction Manual page 46

9-5. Operation Mode Selection
NCW-3DNEC supports following three operation modes.
"SM-Synchronous (SM2)" is used normally.
In "SM-Synchronous (SM2)" mode, the Ethernet frame is sent from the EtherCAT master periodically, but a jitter is
included in the sending cycle. Also, the delay times for receiving frames are different depending on the cable
length to each slave.
Therefore, select "DC-Synchronous" mode when synchronization between slaves with high accuracy is needed.
Slaves can be synchronized 1μs or less.
For the details of the operation mode, refer to "Appendix 2".
(1) SM-Synchronous (SM2)
SM-Synchronous (SM2) is the synchronous mode with SM2 event. In this mode, OUTPUT/INPUT data is
processed with synchronizing the SM2 event.
(2) DC-Synchronous (SM2/SYNC0)
DC-Synchronous (SM2/Sync0) is the synchronous mode with SYNC0 event. In this mode,
OUTPUT/INPUT data is processed with synchronizing the SYNC0 event.
(3) DC-Synchronous (SM2/SYNC0/SYNC1)
DC-Synchronous (SM2/Sync0/Sync1) is the synchronous mode with SYNC0 / SYNC1 event.
In this mode, OUTPUT data processing is synchronized with SYNC0 event, also INPUT data processing
is synchronized with SYNC1 event.
Note: Some of EtherCAT masters don't support DC-Synchronous (SM2/Sync0/Sync1).
9-5-1. Selection procedures of the Operation Mode
Indicates the selection procedures of the Operation Mode
(1) Select "Box1 (NCW-3D_EC)".
(2) Select "DC" tab.
(3) Select the Operation Mode.
The default mode is "SM-Synchronous (SM2)". Change the mode as needed.
Box 1 (NCW-3D_EC)
(1)
39
(3)
(2)