Diagnosing Digital Inputs (Di - Emerson DL8000 Instruction Manual

DL8000 Preset Instruction Manual
Affected
E.5.2 Diagnosing Digital Inputs (DI)
Hardware/
Wiring
E-78
 14/03/12 12:26:02
Test DO Ch
Use DI Ch
DO Current Status
<Check Ext Contact>
(SEL to toggle Sts
Press SELECT to toggle the status of the DO channel. The DI status
updates accordingly.
If you connected the DO with some external contact (instead of the DI
channel), the system updates the DO channel status on the display and
changes the label to DO Current Status (rather than DI Current
Status). Check the external contact for the change. The program
displays the message Check Ext. Contact.
Press STOP to end the test for the current channel. The system restores
all the original values to the updated TLPs with their original value and
redisplays the Select Channel screen:
When you select this test, the system sets certain DO and DI module
TLPs
parameters to specific values to perform the test (as noted below). Once
you complete the test, the system restores all TLP to the values they had
before the test began.
 Put Scanning [101,X,1] into Enabled (1) mode.
 Put Invert Mode [101,X,4] into invert status disabled (0).
 Put Latch Mode [101,X,5] into latch status disabled (0).
 Put Scan time [101,X,13] to 0.005.
 Put Scanning Mode [102,X,2] into Manual (2).
 Put Momentary Mode [102,X,10] into Momentary disabled (0).
 Put Toggle Mode [102,X,12] into Toggle disabled (0).
 Timed Discrete Output Mode [102,X,13] into TDO disabled (0).
 Manual output [102,X,21]
: The preset must have an installed DI module to diagnose the DI.
Note
If no DI module is present, the system displays the No DI Card
in system error message.
You can either connect a DO channel with the DI channel to be tested
or connect to an external source. See Figure E–9.
DL8000 Keypad Display
DO ch 1
NONE
OFF
) (STOP to End
Revised February-2016
)