PMC-5151 User Manual

ICP DAS PMC-5151 User Manual

 DI Status Mapping: When “DI Status Mapping” is selected, the status of the DI channel with the same channel number on the XW-Board will be copied to the DO channel. For example, when the “DI Status Mapping” is enabled on DO0, when the

DI0 status is ON, DO0 will set to be ON, and when the DI0 status is OFF, DO0 will set to be OFF as well.

After all settings of the channels are completed, click “OK” button to return to XW-Board Setting page.

7.2.3 XW-Board AI Channel Settings

The XW-Board AI Channel Setting page is shown as follow (using

XW310C as an example):

Figure7-21 : XW-Board AI attribute setting page

The settings are as follow:

 Nickname：For user to define nicknames for each I/O channel, this nickname will be displayed on the “I/O Information” and “Rule

Setting” pages.

 Type: Select the input signal type of the AI channel from the dropdown list.

 Scale: In the “Scale” field, AI channel raw data can be set to operate with linear proportion between “MIN” and “MAX” values.

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ICP DAS PMC-5151 User Manual

The IF Condition will use this already-adjusted value in the evaluation operation, and the AI value retrieved from the “I/O

Information” page or Modbus Table via PMC-5151 would be the adjusted value. The default value for MAX and MIN is 0, it means the Scale function is disabled.

 Deadband: In order to avoid signal oscillation that may result in instability to the measurement of the AI channel value or system operations, the user can set up a Deadband value for the AI channel to reduce the oscillation effect to the channel value. The detailed description of Deadband operation is as below:

There are three operation styles for AI Deadband. The AI Channel setting in following examples is 0mA ~ 20mA.

(a) In the IF Condition, when AI > or >= a numerical value:

Assuming the Deadband value is set to be 2 mA, and the following statements are defined in the related logic Rule: IF

AI>10mA, THEN DO=ON, ELSE DO=OFF, that means, when AI receives a signal that exceed 10mA, the DO channel will change to ON immediately, however, when the AI channel value drops and becomes lower than 10mA, the DO channel will not change back to OFF immediately until the value reaches 8mA (10mA minus the Deadband value 2mA), as shown in the following figure.

Figure7-22 : AI Deadband Operation(> or >= a numerical value)

(b) In the IF Condition, when AI < or <= a numerical value:

Assuming the Deadband value is set to be 2 mA, and the following statements are defined in the related logic Rule: IF

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ICP DAS PMC-5151 User Manual

AI<10mA, THEN DO=ON, ELSE DO=OFF, that means, when AI receives a signal which is lower than 10mA, the DO channel will change to ON immediately, however, when the

AI channel value exceed 10mA, the DO channel will not change back to OFF immediately until the value reaches

12mA (10mA plus the Deadband value 2mA), as shown in the following figure.

Figure7-23 : AI Deadband Operation(< or <= a numerical value)

(c) In the IF Condition, when AI = a numerical value:

Assuming the Deadband value is set to be 1 mA, and the following statements are defined in the related logic Rule: IF

AI = 9mA, THEN DO=ON, ELSE DO=OFF, that means, when AI receives a signal between 8mA (9mA minus the deadband value 1mA) and 10mA (9mA plus the deadband value 1mA), the DO channel will change to ON immediately.

However, when the AI channel value exceed 10mA, or is lower than 8mA, the DO channel will change to OFF, as shown in the following figure.

Figure7-24 : AI Deadband Operation(= a numerical value)

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