Siemens SINAMICS S120 Commissioning Manual page 52

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1.19 Fault monitoring
Table 1- 18 Node guarding protocol COB-ID = 700h + Node-ID
Heartbeat producer
Inquiry ---->
|
Heartbeat producer time
|
Inquiry ---->
r: reserved (always 0)
s: Status of the "heartbeat producer"
0: Boot-up
4: Stopped
5: Operational
127: Pre-Operational
If a "heartbeat producer time" is configured (object number 1017), the heartbeat protocol
starts immediately. Here state changes from the "Initialization" state to the "Pre-Operational"
state are possible.
In this case a boot-up message is regarded as the first heartbeat message.
Note
Node guarding protocol and heartbeat protocol cannot be used at the same time. As soon as
the "heartbeat producer time" is not equal to zero, the heartbeat protocol is used
automatically.
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Data byte 0
Byte 0, bit 7
t
Byte 0, bit 7
t
Commissioning Manual, (IH2), V2.6, 10/2008 Edition, 6SL3097-2AA00-0BP3
Heartbeat consumer
Byte 0, Bit 6..0 ----> Signaling
s
Byte 0, Bit 6..0 ----> Signaling
s
After expiry of the heartbeat consumer
time: Heartbeat event
|
Heartbeat consumer time
|
|
Heartbeat consumer time
|
CANopen interface