Maple Systems OIT Family - Manual (Page 18)

Verifying the OIT is Operational
Now that you have successfully downloaded an OITware-200 project to the OIT, you can
connect the OIT to a PLC and verify that the OIT is operational.
To verify the OIT is operational:
1. Connect the OIT to a PLC. Please read your OIT Installation Manual before
connecting the OIT to a PLC.
2. Apply power to the OIT and PLC. The OIT should go through the OIT power up
sequence defined below and then display the startup screen you configured in the
Creating an OITware-200 Project section in this chapter.
OIT Power Up
1. The first thing the OIT does during power up is display the “<<< Initializing
>>>” message and perform a self test.
• The OIT checks the condition of the firmware stored in the flash EPROM. If this check reveals
that the firmware is lost or incomplete, the OIT displays a blank screen and beeps continuously.
If this occurs, then you must use the OITware-200 configuration software to download a pro-
ject file to the OIT. The OIT is automatically in download mode while the screen remains
blank and the OIT beeps continuously.
• The OIT tests the static RAM. If the test fails, the OIT displays the following message:
OIT Model Message
OIT3100 and OIT4100 Series SRAM failure!!!
All other models ***SRAM Failure Detected***
If the OIT determines that everything is in working order, the OIT displays the
“Attaching to PLC” message and attempts to attach to the PLC.
2. The OIT attempts to communicate with the PLC. If not successful, the following
message is displayed:
OIT Model Message
OIT3100 and OIT4100 Series
Can’t connect to PLC
Retry in Progress!
All other models
Cannot Connect To PLC During Startup
*** Reconnect in progress ***
3. The OIT attempts to write 0 to the MRRs (if feature not disabled in OITware-200). If
not successful, the following message is displayed:
OIT Model Message
OIT3100 and OIT4100 Series Cannot write to Msg
Request Register!
All other models Error: Setting up Mailbox During Startup
Getting Started 18
1010-0099, Rev. 07