Rockwell Automation 1746-XXXX SLC 500 4-Channel Analog I/O Modules User Manual - Manual (Page 62)

Publication 1746-UM005B-EN-P - June 2004
5-8 Testing Your Module
3. Create and save the test rung shown below.
4. Download the program to the processor and enter the RUN
mode.
5. Display the data in address N7:0.
6. Enter lower boundary condition value in N7:0. For example, if
the lower boundary condition is 1 volt, enter 3277 into N7:0.
7. If the output channel has not been disconnected from its
actuator, the actuator should assume its lower boundary
condition.
If the output channel has been disconnected from its actuator,
connect either the ammeter (current output) or voltmeter
(voltage output) to the analog module output channel. The
exact value of the meter reading is affected by the accuracy of
the analog module and the meter. Ensure that the deviation from
the lower boundary condition is within tolerances for the
application in which the analog module is used.
For example, if 1 volt was the lower boundary condition, the
voltmeter should read approximately 1 volt.
8. Enter upper boundary condition value in N7:0. For example, if
the upper boundary condition is 5 volts, enter 16384 into N7:0.
9. Repeat step 7 for the upper boundary condition.
10. Repeat steps 1 through 9 for each output channel.
11. If any of the output channels do not pass the start–up
procedure, check for the following potential causes:
•
The processor is not in the RUN mode.
•
The terminal block is not secured in the analog module.
•
The analog module terminal block is not wired properly or
wires are broken. See chapter 3 for details on wiring the
analog module.
•
The actuator or test ammeter/voltmeter is not operating
properly.
MOV
MOVE
Source N7:0
Dest O:e.x
"e" is the slot number of the analog module
"x" is the number of the analog module output channel
being tested