TROUBLESHOOTINGINTRODUCTION5 - 2 I-E96-624A®Status BytesFive status bytes provide information about Plant Loop to PlantLoop Transfer Module status. These bytes are availablethrough any operator interface such as the Operator InterfaceStation (OIS). Refer to the instruction for your operator inter-face for an explanation of how to access status bytes. Table 5-2lists the status bytes. Table 5-3 lists the status bytedefinitions.0 0 1 1 0 1 0 1 Microprocessor received spurious excep-tion vector.Reset the PPT.0 0 1 1 0 1 1 0 A divide by 0 or CHK instruction wasexpected.Reset the PPT.0 0 1 1 0 1 1 1 TRAP instruction was executed. None.0 0 1 1 1 1 1 1 The PPT has stopped because the userpressed the Stop pushbutton.Reset the PPT.0 0 0 0 0 0 0 01 The secondary PPT configuration is notcopied from the primary PPT yet.None.1 0 0 0 0 0 0 01 The secondary PPT correctly copied the pri-mary configuration and is ready to takeover.None.1. These codes apply to the secondary PPT in a redundant configuration.Table 5-1. Table 5-1. PPT Error Codes (continued)LED8 7 6 5 4 3 2 1 Meaning Corrective ActionTable 5-2. Status BytesByte Bit+7 6 5 4 3 2 1 01 ES MODE TYPE2 FTX BAC RIO LIO N/A NVI CFG N/A3 PCU MEM NEF N/A N/A N/A N/A N/A4 LIE LRE LRE LTE LTE N/A N/A N/A5 N/A N/A N/A N/A N/A N/A N/A N/A
