Lenze E94AxPExxxx - Manual (Page 325)

Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
325
9 I/O terminals
9.6 "State bus" monitoring function
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9.6 "State bus" monitoring function
The state bus is a bus system that is solely designed for Lenze controllers, via which up to 20
controllers can be connected to each other, and by means of which the function of a "release cord"
can be simulated:
[9-1] Schematic diagram: Networking via state bus
• The state bus only knows the states "OK" and "Error".
• The state bus is a bus with multi-master capability, i.e. each node connected to the state bus can
set the state bus to the "Error" state by setting it to LOW level.
• In the "Error" status, all nodes start their adjustable response, e.g. synchronised braking of the
drive system.
• The "Error" state is also set if a node connected to the state bus is not supplied with voltage.
X2/SB = State bus In/Out (reference potential GE)
X2 X2 X2
GE
24E
SB
GE
24E
SB
GE
24E
SB

Note!
Exception handling:
• In the case of a critical exception within the application (e. g. reset), the "release cord"
is not triggered, the state bus remains in the "OK" status.