Rockwell Automation 61C544A RTD Module User Manual

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4Ć14

Use the following procedure to configure a channel:
Step 1.

Set bits 12 to 15 of register 31 equal to zero. This resets bit

15 of register 22 and places the module in the READY

state. When the READY state is enabled, the module is

ready to process a configuration command.

Step 2.

Select the channel to be configured by writing the

appropriate number to the Channel Number Register

(Register 23).

Step 3.

Define the channel's High High alarm limit by writing the

desired value to the High High Alarm Register (Register

27). This alarm value is a 15Ćbit plus a signĆbit integer that

is in units of 0.1 degrees. See section 4.1.11 for more

information.

Step 4.

Define the channel's High alarm limit by writing the

desired value to the High Alarm Register (Register 28).

This alarm value is a 15Ćbit plus a signĆbit integer that is in

units of 0.1 degrees. See section 4.1.12 for more

information.

Step 5.

Define the channel's Low alarm limit by writing the desired

value to the Low Alarm Register (Register 29). This alarm

value is a 15Ćbit plus a signĆbit integer that is in units of 0.1

degrees. See section 4.1.13 for more information.

Step 6.

Define the channel's Low Low alarm limit by writing the

desired value to the Low Low Alarm Register (Register 30).

This alarm value is a 15Ćbit plus a signĆbit integer that is in

units of 0.1 degrees. See section 4.1.14 for more

information.

Step 7.

Define the number of input data samples that are to be

averaged together for the input running average value.

Write the desired number to the Number of Samples

information.

Step 8.

Enter the required information in the Configure Command

information. Set the Configure Command Code (bits 12 to

15) equal to three. This code transfers (writes) the

channel's parameters into memory.

Step 9.

When the module finishes processing the write

configuration operation, it will set bit 15 of register 22

equal to one. To configure another channel repeat the

procedure beginning with step 1.

4.3

Monitoring Data and

Configuration Register Values

Run the ReSource Programming Executive Software. Use the

MONITOR function in DCS 5000/ AutoMax systems or the POINT

MONITOR function in AutoMate systems to check the contents of the

registers. Note that you need to configure the channels before you

can monitor their contents.
Status register values are in hexadecimal format. All other register

values are in decimal.