CONTREX CX-1200 - Manual (Page 308)

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DIGITAL I/O TEST P1/1
Use the Digital I/O Test to activate the digital outputs and monitor the digital inputs without the inputs being in
actual operation. To enter the diagnostics state, enter a “1” in Diagnostics En (CP-450) or use the increment
scroll-up key.
Danger: The CX-1200 must be in “F-Stop" when you begin the diagnostics. The Diag
DO (CP-452) will automatically set to the current state of the Digital Outputs. This will prevent any
unexpected change on the outputs. Determine the binary value for Diag DO (CP-452) that places a “1” in
the bits corresponding to the digital outputs that you want active and a “0” in the bits corresponding to the
outputs that you want inactive.
Danger: Changing the digital outputs may cause movement in your
system. Enter this value into Diag DO (CP-452). Verify that the outputs are active (low). The Digital
Inputs can be monitored in DI 7..0 (MP-102) and DI 15..8 (MP-101). Short the corresponding pin common
of the inputs to make the output active. Monitor these MP’s to verify that the active pins are recognized (a
“1” appears in the corresponding bit).
Diagnostics En
When Diagnostics Enable (CP-450) is set to “1” (On or enabled), the digital inputs will not recognize their normal
function and the digital outputs can be controlled by Diag DO (CP-452). In addition, the CO_Sig Control Output can
be tested. When you enter diagnostics, Diag DO (CP-452) is forced equal to the current DO 7..0 (MP-102) so that there
is no unexpected change in the outputs. Change the outputs through Diag DO (CP-452) while performing the
diagnostics.
Warning: The actuator may energize if you change Diag DO (CP-452). Stand clear of the system.
1 = On
0 = Off (default)
Diag DO
Diagnostic Digital Out (CP-452) controls the digital outputs when Diagnostics En (CP-450) is set to “1, 2 or 3” (On or
enabled) during diagnostics. It is an 8 Bit Binary number with 1 bit per output. If the bit is a “1”, then the
corresponding output is pulled “low”. When you enter diagnostics, Diag DO (CP-452) is forced equal to the current
DO 7..0 (MP-102) so that there is no unexpected change in the outputs. Change the outputs through Diag DO (CP-452)
while performing the diagnostics.
Warning: The actuator may energize if you change Diag DO (CP-452). Stand clear of the system.
Diag DO Shift
When in Diagnostics State, Diagnostics Digital Out Shift (CP-451) may be used to activate the digital outputs one at
a time.
Warning: The actuator may energize if you change Diag DO (CP-452). Stand clear of the system.
8 = Drive Enable Activated
7 = Fwd/Rvs Alm Activated
6 = Batch Done Activated
5 = Foll Sync Absent Activated
4 = Lead Sync Absent Activated
3 = Sync Alarm
Activated
2 = Hi/Low Spd Alm Activated
1 = Zero Speed Activated
0 = Off (default)
DI 7..0
Digital Input 7..0 (MP-100) displays the value of the “J6” digital inputs. A ‘1’ in the bit location indicates a “low
voltage” condition on the corresponding input (which is consistent with a contact closure to common). Refer to
Appendices: Appendix C for the DI 7..0 (MP-100) bit map list.
DI 15..8
Digital Input 15..8 (MP-101) displays the value of the “J7” digital inputs. A ‘1’ in the bit location indicates a “low
voltage” condition on the corresponding input (which is consistent with a contact closure to common). These eight
inputs can be set up in the PLC Programming screen to generate a One-Shot -Pulse on a high-to-low transition. Refer
to Appendices: Appendix C for the DI 15..8 (MP-101) bit map list.