Control And Status Information - Siemens SIMATIC PN/CAN LINK Operating Instructions Manual

5.1.3.3

Control and status information

Controller information
The following controller information is cyclically transmitted by the S7 controller to the
PN/CAN LINK:
Table 5- 6
Bit
7 ... 2
1
0
SIMATIC PN/CAN LINK
Operating Instructions, 03/2022, A5E39895388-AC
Structure of controller information in the PROFINET IO data (from S7 controller to PN/CAN
LINK, 1 byte)
Value
Reserved Must be
"0"
Reset bit 1
0
Control bit 0
1
Meaning
--
The CANopen side is reset when the bit changes to "1". All OD
entries are reset to initial values and the boot-up message is
sent. The CANopen Manager must configure and start the
PN/CAN LINK again in this case.
The PN/CAN LINK acknowledges receipt of the reset command by
setting the reset acknowledgment bit in the data for the S7
controller to "1".
The S7 controller can then set the reset bit to "0".
When the reset has been performed and the reset bit is "0", the
PN/CAN LINK sets the reset acknowledgment bit to "0".
Only then can a reset be performed again.
The PN/CAN LINK must not be in the NMT state "Operational". If
the current state is "Operational", the PN/CAN LINK changes to
the state "Pre-Operational". Commands from the NMT master to
change to the "Operational" state are ignored.
The PN/CAN LINK can be switched by the NMT master via NMT
command to the "Operational" state.
Functions
5.1 CANopen
59