Safety engineering
Safety address
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EDS94AYAF EN 1.0
1.4 Safety address
The safety address serves to the clear assignment of the safety modules of the SM302 type
in systems with several drives. The address "0" is not permissible.
Address switch
The safety address can be set in the left part of the housing by means of the DIP switch .
For setting the switch, use an appropriately small tool, e.g. a probe. The switch can only be
set if the module is not connected to a standard device. The switch serves to set addresses
in the range of 0 ... 1023. Alterations by the switch with regard to the address are only
activated when the 24−V supply is switched on.
ƒ The address setting "0" requires the setting by the address code.
ƒ The address settings 1 ... 1023 are used with priority. The setting by the address code
is not possible.
DIP switch Labelling
1 2 3 4 5 6 7 8 9 0
Value of the address bit 1 2 4 8 16 32 64 128 256 512
Tab. 1−5 Address setting
Address code
The safety address can also be set with the "Safety address" parameter (C15111) of the
safety module. For this, the address setting via the DIP switch must be set with the "0"
setting. Via parameter, addresses can be set in a range of 0 ... 65534.
Effective safety address
The effective safety address is the result from the address switch or address parameter.
The effective safety address must comply with the module ID assigned in the safe
parameter set.
The effective safety address must also be used as target address by a master control with
safety bus (e.g. PROFIsafe/PROFIsafe target address).
Module ID
Before the safe parameter set is downloaded, the system checks if the module ID defined
in the parameter set corresponds to the module ID saved in the safety module. If the values
are not the same, a corresponding message is displayed. This shall ensure that the safety
address is not changed by mistake during parameter setting. If the user confirms the new
value after checking it, the changed module ID will be saved non−volatile in the SM302.
Code C15017 contains the module ID saved during the last parameter set transfer in the
SM302.
Note!
A general reset does not change the stored module ID.
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