Exam 19: Configuring a Serial Driver Using Rs Linx

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Controllers using serial communications typically default to node 01.

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If auto configuration fails to find the controller, what are three checks that can be performed?

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If auto configuration fails to find the controller, check the following:
1. Is the PAC or device you are attempting to communicate with turned on?
2. Is Correct Communication port selected on the Configure Devices window?
3. Are you using the correct serial cable?
4. Are you using a good serial cable?
5. Are there problems with the computer's serial port?
6. Are there problems with the PAC's serial port?

A set of rules that govern the way that data is formatted and timed as it is transmitted between the sending and receiving devices is known as a(n) ____________________.

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Any PAC with an RS-232 serial port can communicate with any other RS-232 port.

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The RS-232 communication standard defines the number of pins and wires that must be used in establishing the connection.

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Briefly explain why a straight-through connection is not possible between a personal computer and a PAC.

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When configuring a communication link between two devices, such as a computer and a PAC, what are two important aspects of the communication link?

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The simplest connection between a personal computer and a PAC is a serial connection.

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Used to verify communication with the PAC, the ____________________ screen displays an X through the controller if communications were established at one point but have currently been lost.

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A serial connection to a PLC is a direct connection between the personal computer and the controller.

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Briefly distinguish between the functions of a null modem cable and a straight-through serial cable by providing examples of the types of devices connected with each.

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What are two pieces that comprise a serial path in a connection to a controller?

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If the wires go directly between the two devices, pin for pin, this is referred to as a(n) ____________________ connection.

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The RS-232 standard specifies that computer devices have ____________________ connectors

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The common name for the communication cable where wires 2 and 3 are crossed is a(n) ____________________ cable.

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