Rockwell Automation Current Input Module - Manual (Page 34)

4Ć16
4.3 Monitoring Data and Configuration
Register Values
Run the ReSource Software. Use the MONITOR function in
DCS 5000/AutoMax systems or the POINTMONITOR 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.
4.4 Sample DCS 5000/AutoMax Current Input
Application Task
The sample DCS 5000/AutoMax current input application task in
figure 4.12 is written for a Current Input module in slot 2 which is
connected to three 4Ć20 mA transmitters which are wired into a
pressure polymerization process.
One transmitter is used to sense the level of the material in the
reactor. The second transmitter has its span calibrated for 0 to 3000
psig (gauge poundsĆperĆsquare inch) and is used during startup
operation. The third transmitter has its span calibrated for 1940 to
1960 psig and is used for process control.
Channel 0: Material Level
Process Parameters
Configuration Values
D Maximum = 20 feet Reg. 24 = 2000 (Scaled in
ąąą0.01 Ft)
D Minimum = - 1 feet Reg. 25 = -100
D High High Alarm = 18 feet Reg. 27 = 1800
D High Alarm = 16 feet Reg. 28 = 1600
D Low Alarm = 4 feet Reg. 29 = 400
D Low Low Alarm = 0 feet Reg. 30 = 0
Channel 1: Startup Pressure
Process Parameters
Configuration Values
D Maximum = 3000 psig Reg. 24 = 3000 (Scaled directly
ąąąin psig)
D Minimum = 0 psig Reg. 25 = 0
D High High Alarm = 2500 psig Reg. 27 = 2500
D High Alarm = 2000 psig
Reg. 28 = 2000
D Low Alarm = 500 psig Reg. 29 = 500
D Low Low Alarm = 250 psig Reg. 30 = 250