Siemens SIMATIC PN/CAN LINK

Functions
5.1 CANopen
SIMATIC PN/CAN LINK
Operating Instructions, 03/2022, A5E39895388-AC
61
Bit
Meaning
Possible values
Note
1 … 0
State of
the CAN
controller
0
Off
When specified accordingly by the
S7 controller.
1
Bus Off
Error counter
1)
has reached the
specified second threshold.
As a result, the PN/CAN LINK can no
longer transmit/receive any
packages.
Note: "Bus-Off" is also signaled
when the PN/CAN LINK needs more
than two seconds to synchronize
with the CAN bus.
2
Error Passive
Error counter
1)
has exceeded the
specified first threshold. The
PN/CAN LINK still transmits/receives
packages.
3
Error Active
Error counter
1)
is below a specified
threshold. The PN/CAN LINK
transmits/receives packages. This is
the normal state. Everything is
okay.
1) The error counters customary in CAN and their associated thresholds are internal functions that are
not visible to the user.
Note
For values consisting of multiple bits, the first bit is the MSB and the last bit the LSB.
Example: Bit 1 ... 0 = "2" means that bit 0 = "0" and bit 1 = "1".