Control And Status Information - Siemens Simatic Operating Instructions Manual

10
11, 12, 13
4.1.3.3

Control and status information

Controller information
The following controller information is cyclically transmitted by the S7 controller to the
PN/CAN LINK:
Table 4- 6
Bit
7 ... 2
1
0
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB
Triggered by an NMT command from the CANopen Manager.
Can be triggered by:
An NMT command from the CANopen Manager (depending on the command,
•
transition to "Reset Application" or "Reset Communication" substate)
The reset bit from the S7 controller (transition to "Reset Application" substate)
•
Reconfiguration by the S7 controller (transition to "Reset Application" sub-
•
state)
Structure of controller information in the PROFINET IO data
(from S7 controller to PN/CAN LINK, 1 byte)
Value Meaning
Reserved Must be --
"0"
Reset bit 1 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
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 control-
ler to "1".
The S7 controller can then set the reset bit to "0".
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.
Control bit 0 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.
1 The PN/CAN LINK can be switched by the NMT master via NMT
command to the "Operational" state.
Functions
4.1 CANopen
39