Compare to Beckhoff EtherCAT Data-Exchange devices

 

EL6695

EL6692

FC1100

FC1121

CXnnnn-B110

Design

24mm Terminal

PCIe-plug-in card

Integrated within embedded-PC

PDO Cyclic
process-data

max. 3 kB every direction (1

Execute TC2.11b2248 or TC3.1 b4018: 255 variables, max. entire scaling MTU (c.a.1400 Byte)

max. 480 Byte every direction

max. 1024 Byte every direction

max. 480 Byte every direction

PDO
transmission speed
(device-internal, without
bus-cycle)

E.g.: 200 Byte in/200 Byte out: 15 µs typ

E.g.: 1400 Byte in/1400 Byte out: 50 µs typ

typ. 1..4 ms

E.g.: 200 Byte in/200 Byte out: 1 ms typ.

E.g.: 480 Byte in/480 Byte out: ca 300 µs (2

E.g.: 480 Byte in/480 Byte out: ca 250 µs auf CX5020 (2

Supported
asynchronous
protocols

CoE, EoE, AoE, FoE, (VoE, SoE)

CoE, AoE, EoE

Mailbox

128-1498 Byte

128-1024 Byte

64-1024 Byte

Mailbox-
default settings

1024 Byte

256 Byte

1024 Byte

512 Byte

Minimal allowed
EtherCAT cycletime (3

50 μs (SyncMan interrupt be used)

No limit (SyncMan interrupt not be used)

DistributedClocks
syncronization

yes

In TwinCAT als
externe Referenzuhr
nutzbar

yes

Specific properties

  • Synchronous data-exchange
  • Flexible CoE-definition / CoE device-emulation
  • As for direct bidirectional DC-synchronization applicable
  • PDO mapping (symmetric or selective)
  • ADS Routing (proceeding of ADS requests by two masters)
  • Transmission of up to 5 kB user data by FoE
  • Independent power supply primary/secondary
  • For DC-synchronization indirectly over EC-Master applicable
  • ADS routing

)1 The number of supported cyclic PDO is dependent by the EtherCAT master

)2 Transmission values are significant dependent by the IPC environment and control

)3 This limit means an operational limit of the device. Indeed the lowest reasonable cycle time of both sides is amongst others dependent by the amount of data to be transferred (and also the PDO transmission time) – a sensible cycle time should be chosen as for the terminal is able to get/set data every cycle.