Measuring machine communication
First Claim
1. A method for line-connected bidirectional communication between subscribers in a position measuring system of a coordinate measuring device, the position measuring system comprising an arrangement of the subscribers in a chain-shaped serial structure in which, apart from a first and a last of the subscribers in the serial structure, each of the subscribers is connected by means of a first communication interface to one of the subscribers in front and by means of a second communication interface to one of the subscribers behind,wherein each subscriber has a message processing unit that can be used for controlling the first and second communication interfaces to send and/or receive a message independently of one another, andthe method comprising:
- receiving the message as a digital data structure via the first communication interface;
evaluating an identifier region of the message, which region contains information about the message handling by the subscriber, by means of comparison of a content of the identifier region with prescribed setpoint criteria;
on the basis of the comparison result, modifying of the content of the identifier region of the message using a prescribed mapping function that uses the received content of the identifier region to determine a content that needs to be sent for the identifier region;
subsequently forwarding of the message that has had its identifier region modified via the second communication interface; and
processing of the message in the subscriber.
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Accused Products
Abstract
Embodiments of the invention relate to a method for line-conducted bidirectional communication between subscribers in a measuring system, the subscribers being arranged in a chain-like series structure. In said series structure, each of the subscribers is connected to one of the subscribers that precedes same by means of a first communication interface and to one of the subscribers that follows same by means of a second communication interface. Each of the subscribers has a message processing unit, by means of which the first and second communication interfaces can be operated independently of each other in order to send and/or receive a message. In the communication by the message processing unit, the message is received as a digital data structure by means of the first communication and an identification range of the message is evaluated by comparing a content of the identification range within specified target criteria.
10 Citations
21 Claims
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1. A method for line-connected bidirectional communication between subscribers in a position measuring system of a coordinate measuring device, the position measuring system comprising an arrangement of the subscribers in a chain-shaped serial structure in which, apart from a first and a last of the subscribers in the serial structure, each of the subscribers is connected by means of a first communication interface to one of the subscribers in front and by means of a second communication interface to one of the subscribers behind,
wherein each subscriber has a message processing unit that can be used for controlling the first and second communication interfaces to send and/or receive a message independently of one another, and the method comprising: -
receiving the message as a digital data structure via the first communication interface; evaluating an identifier region of the message, which region contains information about the message handling by the subscriber, by means of comparison of a content of the identifier region with prescribed setpoint criteria; on the basis of the comparison result, modifying of the content of the identifier region of the message using a prescribed mapping function that uses the received content of the identifier region to determine a content that needs to be sent for the identifier region; subsequently forwarding of the message that has had its identifier region modified via the second communication interface; and processing of the message in the subscriber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 21)
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15. A subscriber to bidirectional line-connected measuring system communication of a coordinate measuring device, the subscriber comprising:
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message processing unit; and at least two communication interfaces that can be controlled independently of one another by the message processing unit and can be connected to a subscriber in front and a subscriber behind, wherein the message processing unit is configured to; receive the message as a digital data structure via the first communication interface; evaluate an identifier region of the message, which region contains information about the message handling by the subscriber, by means of comparison of a content of the identifier region with prescribed setpoint criteria; on the basis of the comparison result, modify of the content of the identifier region of the message using a prescribed mapping function that uses the received content of the identifier region to determine a content that needs to be sent for the identifier region; subsequently forward of the message that has had its identifier region modified via the second communication interface; and process of the message in the subscriber. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification