CONFIGURATION AND CALIBRATION
FIELD CALIBRATION
4 - 8
15 December 1994
I-E96-301B1
®
The following steps field calibrate channel 1 for the low-level
voltage range of -100 mV to +100 mV. Change specification 4
and use these steps to configure high level or resistance
inputs. Also S4 of function code 216 must be consistent with
the type of calibration being performed.
1. Locate the block address in the MFP of the Enhanced
Function Code (FC 217).
2. Verify that the slave expander bus dipshunts are in place to
allow slave bus communications.
3. On the IMASI03, for each input channel, place the jumper
connector pairs (J1-J32) in position 1-2 for low or high voltage
inputs (position 2-3 is for RTD inputs).
4. Set S2 of FC 217 to the block address of the function code
215 which references the IMASI03.
5. Insert the slave into a powered slot. The LED will change to
solid green because the slave is linked to a function code 215
in the configuration.
6. Allow the slave to warm up for at least 15 minutes.
7. Put the MFP in execute mode.
8. Set the FC 217 block for the required specifications. After
each calibration command is issued by performing a tune oper-
ation, monitor the calibration command status to determine if
any errors have occurred during the field calibration.
This example calibrates channel one on the slave which is ref-
erenced by the function code 215 at block address 100. For low
level voltage, disable the desired channel by tuning these val-
ues into the specifications.
a. disable point
S1 = 1
b. the slave referenced by FC 215
S2 = 100
at block address 100
c.
slave channel 1
S3 = 1
9. Verify that the low-level voltage source is connected to
channel 1 of the slave to be calibrated and the source voltage is
set to the first desired value (this example calls for -100 mV).
NOTE: Each time the source voltage is changed, at least 15 sec-
onds settling time is required before the point field calibration takes
place. If the source itself has a measurable settling time, add this to
the 15 second requirement.
