Functions
5.2 CAN transparent
SIMATIC PN/CAN LINK
Operating Instructions, 03/2022, A5E39895388-AC
65
5.2
CAN transparent
5.2.1
Overview
All CANopen functions are disabled in "CAN transparent" mode. The PN/CAN LINK only
communicates with the CAN2.0A(B) protocol over the bus according to ISO standard 11898
(ISO 11898-2). The operating mode for the PN/CAN LINK is set via the associated HSP in the
TIA Portal.
5.2.2
State model
In "CAN transparent" mode the PN/CAN LINK has the two states "OFF" and "ON".
PN/CAN LINK state "OFF"
No CAN frames are transmitted or received in this state. The CAN controller does not
participate in the CAN bus communication. It does not transmit or receive messages or any
error frames.
If the PN/CAN LINK is not connected to an S7 controller or if the data from the S7 controller
has the IO provider status "Bad", the PN/CAN LINK goes to "OFF" state.
PN/CAN LINK state "ON"
In this state the PN/CAN LINK participates in the CAN bus communication, that is it transmits
and receives CAN frames unless the CAN controller is in Bus Off state.
Содержание SIMATIC PN/CAN LINK
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