Method of configuring a safe station and safe control system using the same
First Claim
1. In a safe control system comprising a field bus, an administration unit and a plurality of safe bus users, all of which being connected to said field bus, a method of allocating a defined user address to a selected bus user when connecting the same to said field bus, said method comprising the steps of:
- activating a special maintenance mode in said administration unit, repeatedly sending out a defined maintenance message from said administration unit to said plurality of bus users, connecting said selected bus user to said field bus, receiving said defined maintenance message by said selected bus user, sending out a first registration message from said selected bus user to said administration unit, said first registration message containing a predetermined universal address, sending out an address allocation message from said administration unit to said selected bus user, said address allocation message containing said defined user address to be allocated, receiving said address allocation message by said selected bus user, and storing said defined user address in a memory of said selected bus user.
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Abstract
The present invention describes a method of allocating a defined user address to a safe bus user when connecting it to a field bus of a safe control system. The method comprises the step of sending out a first registration message from the safe bus user to an administration unit connected to the field bus. The first registration message contains a predetermined universal address. The method further comprises the step of sending out an address allocation message from the administration unit to the safe bus user, wherein the address allocation message contains the defined user address. Finally, the method comprises the step of storing the defined user address in a memory of the safe bus user.
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Citations
21 Claims
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1. In a safe control system comprising a field bus, an administration unit and a plurality of safe bus users, all of which being connected to said field bus, a method of allocating a defined user address to a selected bus user when connecting the same to said field bus, said method comprising the steps of:
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activating a special maintenance mode in said administration unit, repeatedly sending out a defined maintenance message from said administration unit to said plurality of bus users, connecting said selected bus user to said field bus, receiving said defined maintenance message by said selected bus user, sending out a first registration message from said selected bus user to said administration unit, said first registration message containing a predetermined universal address, sending out an address allocation message from said administration unit to said selected bus user, said address allocation message containing said defined user address to be allocated, receiving said address allocation message by said selected bus user, and storing said defined user address in a memory of said selected bus user. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a safe control system comprising a field bus, an administration unit and a plurality of safe bus users, all of which being connected to said field bus, a method of allocating a defined user address to an exchange bus user which is intended to replace an old bus user, wherein said old bus user comprises an old user address, said method comprising the steps of:
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providing a nominal configuration of said control system in said administration unit, said nominal configuration representing the number and user addresses of all bus users connected to said field bus, disconnecting said old bus user from said field bus, activating a special maintenance mode in said administration unit, repeatedly sending out a defined maintenance message from said administration unit to the remaining ones of said plurality of bus users connected, sending out response messages from the remaining ones of said plurality of bus users to said administration unit, identifying said old bus user by means of said nominal configuration and said response messages, selecting said old user address as defined user address to be allocated to said exchange bus user, connecting said exchange bus user to said field bus, receiving said defined maintenance message by said exchange bus user, sending out a first registration message from said exchange bus user to said administration unit, said first registration message containing a predetermined universal address, sending out an address allocation message from said administration unit to said exchange bus user, said address allocation message containing said defined user address to be allocated, receiving said address allocation message in said exchange bus user, and storing said defined user address in a memory of said exchange bus user.
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9. A method of configuring a safe bus user when connecting it to a field bus of a safe control system, wherein a defined user address is allocated to said safe bus user, said method comprising the steps of:
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sending out a first registration message from said safe bus user to an administration unit connected to said field bus, said first registration message containing a predetermined universal address, sending out an address allocation message from said administration unit to said safe bus user, said address allocation message containing said defined user address to be allocated, and storing said defined user address in a memory of said safe bus user. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. Control system for safely controlling safety-critical processes, comprising a field bus, an administration unit, and at least one safe bus user all of which being connected to said field bus, said safe bus user comprising a registering unit for registering with said administration unit under a predetermined universal address, a memory for storing a user address allocated to said bus user, and a receiver for receiving and evaluating an address allocation message from said administration unit, said address allocation message containing said user address to be allocated.
Specification