Troubleshooting guide

24  Hardware Configuration Reference Guide
SW-1 (Asynchronous Link Features)
Protocol Error Parity Embedded Switch
Checking Response 1 2 3
Full duplex BCC None No OFF OFF OFF
Full duplex BCC Even No ON OFF OFF
Full duplex BCC None Yes OFF ON OFF
Full duplex BCC Even Yes ON ON OFF
Full duplex BCC None No OFF OFF ON
Half duplex BCC Even No OFF ON ON
Full duplex CRC None Yes OFF ON ON
Half duplex CRC None No ON ON ON
SW-1 Switch 4 (Duplicate)
Messages Switch 4
Detect and ignore duplicates ON
Accept all regardless of duplication OFF
SW-1 Switch 5 (Handshaking)
Handshaking Switch 5
Use handshaking signals ON
Ignore handshaking signals OFF
SW-1 Switch 6 (Diagnostics)
Diagnostic Command Switch 6
Execute ON
Pass OFF