Datasheet

TMC8462 Datasheet • Document Revision V1.5 • 2019-June-21

143 / 204

7.3.11 Application Layer Control

7.3.11.1 Register 66 – AL_OVERRIDE

Bit Description ECAT PDI Range [Unit]

0 0 = no override

1 = override AL state

-/w -/w

7:1 unused/reserved -/- -/-

Table 188: MFC IO Register 66 – AL_OVERRIDE

Note

The bit controls override conﬁguration of the 24 MFC IO

output ports

regarding

the output port availability with respect to the actual EtherCAT Slave Controller’s

AL state.

Typically, in an EtherCAT slave the output ports are only available/active when AL

state = "‘OP"’ (operational). If the override bit is set, the AL state is ignored and

the MFC IO ports are fully available via the MFC IO Control Interface.

The ABN functional block, IRQ conﬁguration, Watchdog block are not aﬀected by

this conﬁguration option since they only have input ports/signals.

! This register can only be accessed from MFC IO Control Interface. It cannot be

accessed from ECAT master side.

The input ports are always readable via the MFC IO Control Interface.

When an input port is conﬁgured to be accessed by the EtherCAT master, it can

only be read when the EtherCAT state machine is in safe-operational state or

operational state.

When an output port/value is conﬁgured to be controlled by the EtherCAT master,

this is only possible when the EtherCAT state machine is in operational state

because. This is deﬁned in the EtherCAT standard.

Terms of delivery and rights to technical change reserved.

Download newest version at www.trinamic.com