Siemens SIMATIC PN/CAN LINK

Functions
5.1 CANopen
SIMATIC PN/CAN LINK
Operating Instructions, 03/2022, A5E39895388-AC
47
Status information
The following status information is transmitted cyclically from the PN/CAN LINK to the S7
controller:
Table 5- 2 Structure of status information in the PROFINET IO data (from PN/CAN LINK to S7
controller, 1 byte)
Bit
Meaning
Possible values
Note
7
NMT status
feedback
0
One/multiple slaves are rebooted
or the gateway state is not "CAN
network Pre-Operational" or
"CAN network Operational"
Bit indicates whether all slaves have
already returned the NMT status
that matches the PN/CAN LINK
status.
1
Gateway state is "CAN network
Pre-Operational" or "CAN
network Operational" and all
nodes have the gateway state
that is signaled in bit 5 ... 3.
--
6
Reset
acknowledg
ment bit
0
PN/CAN LINK is ready for reset.
To provide feedback about the
resetting of the CANopen side to
the user program running on the
S7 controller, the reset
acknowledgment bit is used in the
data that is cyclically sent from the
PN/CAN LINK to the S7 controller.
As soon as the command for
resetting the CANopen side has
been received, this bit is set to "1".
Afterwards the user program
running on the S7 controller must
set the reset bit to "0". When the
reset of the CANopen side is
complete, the PN/CAN LINK sets the
reset acknowledgment bit to "0".
1
The PN/CAN LINK is currently
performing or has performed a
reset but the reset bit of the S7
controller is still set to "1".
--
5 … 3
PN/CAN LINK
state
0
Booting slaves
--
1
CAN network "Pre-Operational"
--
2
CAN network "Operational"
--
3
CAN network "Stopped"
--
4
Waiting for boot-up enable
If this state is being signaled
continuously, bit 2 in the control
byte must be set to "1".
5…7
Reserved
--
2
Group status
of all data
0
There are receive OD entries
whose values have not yet been
updated by a corresponding PDO
since the last reset.
--
1
All receive OD entries have been
updated at least once by a PDO
since the last reset.
--