Rockwell Automation 61C544A RTD Module - Manual (Page 30)

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
Register (Register 26). See section 4.1.10 for more
information.
Step 8. Enter the required information in the Configure Command
Register (Register 31). See section 4.1.15 for more
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.